Ovulation calendar: When am I most fertile? 

Your most fertile days

 today   First day of your cycle   Possibly fertile   Fertile   Most fertile   Implantation   Ovulation   Try a pregnancy test 

October 2022
SunMonTueWedThuFriSat
 1
2345678
9101112131415
16171819202122
23242526272829
3031 
November 2022
SunMonTueWedThuFriSat
 12345
6789101112
13141516171819
20212223242526
27282930 
December 2022
SunMonTueWedThuFriSat
 123
45678910
11121314151617
18192021222324
25262728293031

Calculate my cycle



*First day of your cycle = First day of last period
*Luteal phase = Days between ovulation and next period. Usually 14 days.

Your ovulation, day by day

A new cycle starts here!
Fri, November 25, 2022
day 1, menstrual phase.
28 days to your next cycle.
• Although the menstrual cycle lasts typically 3 to 5 days, anything between 2 to 7 days is considered normal.
Sat, November 26, 2022
day 2, menstrual phase.
27 days to your next cycle.
• The average bloodloss during menstruation is 35 milliliters (1.2 fl.oz) and anything between 10 and 80 ml (0.33 - 2.7 fl.oz) is considered normal.
Sun, November 27, 2022
day 3, menstrual phase.
26 days to your next cycle.
• Because of the bloodloss during the monthly menstrual cycle, women require more iron then men.
Mon, November 28, 2022
day 4, menstrual phase.
25 days to your next cycle.
• Many women experience uterine cramps during menstruation.
Tue, November 29, 2022
day 5, follicular phase.
24 days to your next cycle.
• The lining of the uterine wall is now at its thinnest. The levels of progesterone and estrogen are now at their lowest.
As a result of the increase in Follicle Stimulating Hormone (FSH), five to seven tertiary follicles will be utilised. One of these will become the egg cell.
Wed, November 30, 2022
day 6, follicular phase.
23 days to your next cycle.
• The selected follicles have been developing for almost a year in a process known as folliculogenesis. The follicles vie for dominance.
Thu, December 1, 2022
day 7, follicular phase.
22 days to your next cycle.
• Due to the influence of several hormones most follicles will die in a process known as atresia. One or two will remain and become mature follicles.
Fri, December 2, 2022
day 8, follicular phase.
21 days to your next cycle.
• Fertility increases as the follicular phase progresses.
Sat, December 3, 2022
day 9, follicular phase.
20 days to your next cycle.
• As the remaining follicles mature they produce more estrogen. The estrogen ensures that a new edometrial layer is formed in the womb and that cervical glands produce fertile mucus.
Sun, December 4, 2022
day 10, follicular phase.
19 days to your next cycle.
• The time required to recruit and select the most dominant follicles can result in variations in the length of menstrual cycles.
Research has indicated a long menstrual cycle can be shortened by placing a clear 100w lamp beside the bed five nights before ovulation.
Mon, December 5, 2022
day 11, follicular phase.
18 days to your next cycle.
• Sperm lives on average 1 to 5 days but can survive up to 8 days. If you are trying to conceive the best time to try is between now and the next 5 days. Bcause ovulation varies among women it is suggested between now and the following 9 days is the optimum time to try to conceive.
Tue, December 6, 2022
day 12, follicular phase.
17 days to your next cycle.
• Today and for the next three days is the best time to try to conceive.
Wed, December 7, 2022
day 13, follicular phase.
16 days to your next cycle.
• If the egg matures it will produce enough estradiol to begin the process of secretion of (LH) luteinizing hormone.
Thu, December 8, 2022
day 14, follicular phase.
15 days to your next cycle.
• During an average cycle the release of LH begins around day 12 and lasts approximately 48 hours.
Fri, December 9, 2022
day 15, ovulation phase.
14 days to your next cycle.
• Ovulation: The ovaries release the egg which travels into the fallopian tube. IF fertilisation takes plae it will occure today or tomorrow in this fallopian tube. An egg can be fertilised up to 48 hours after release.
Sat, December 10, 2022
day 16, luteal phase.
13 days to your next cycle.
• After ovulation the ovarian follicle which released the egg changes and is known as the corpus luteum or yellow body. Over the next 14 days this will produce progesterone. Progesterone helps prepare the uterus for implantation and maintains the lining which provides food to the newly implanted egg.
Sun, December 11, 2022
day 17, luteal phase.
12 days to your next cycle.
• Approximately 24 to 30 hours after fertilisation the first mitosis or cell division takes place.
Increased progesterone raises the body temperature in order to provide the optimum conditions for the egg. Body temperature is increased by 0.25 to 0.50 of a degree. Women who take note of their basal body temperature will notice that the luteal phase has begun.
Mon, December 12, 2022
day 18, luteal phase.
11 days to your next cycle.
• If fertiliation has taken place the egg and spermatozoon are known collectively as the zygote. The zygote will travel through the fallopian tube to the uterus. This journey of 10cm or 4 inches proceeds at a rate of 1.5cm or 0.6 inches.
Tue, December 13, 2022
day 19, luteal phase.
10 days to your next cycle.
• If the released egg is not fertilised within 24 to 48 hours, the rest of the luteal phase will be infertile.
Wed, December 14, 2022
day 20, luteal phase.
9 days to your next cycle.
Once the division of the zygote cells increases to 16, the collection of cells are known as a morula.
Thu, December 15, 2022
day 21, luteal phase.
8 days to your next cycle.
Sat, December 17, 2022
day 23, luteal phase.
6 days to your next cycle.
• A fertilised blastocyst attaches itself to the uterine wall. At the point where the cell meets the uterus the umbilical cord and placenta begin to form. This implantation can happen today or within the next few days.
Sun, December 18, 2022
day 24, luteal phase.
5 days to your next cycle.
• Shortly after the implantation of the growing embryo, other changes will take place in the body. One of the first signals is the secretion of pregnancy hormone human Chorionic Gonadotropin (hGC). This is the hormone picked up by pregnancy tests.
Mon, December 19, 2022
day 25, luteal phase.
4 days to your next cycle.
• The quantity of hCG increases but may still be too low to be recognised by the standard over the counter pregnancy test. The amount of hGC doubles every 2 to 3 days.
Tue, December 20, 2022
day 26, luteal phase.
3 days to your next cycle.
• An hGC bloodtest will now be able to detect the slight increase in hCG but it is still too early for a urine test to be accurate.
Wed, December 21, 2022
day 27, luteal phase.
2 days to your next cycle.
Thu, December 22, 2022
day 28, luteal phase.
1 days to your next cycle.
• From today a sensitive urine based pregnancy test might be able to detect hGC for a positive result. However, a negative test does not mean there is no pregnancy but can indicate that hGC levels are still not sufficient to be measured.
A new cycle starts here!
Fri, December 23, 2022
day 1, menstrual phase.
28 days to your next cycle.
• Although the menstrual cycle lasts typically 3 to 5 days, anything between 2 to 7 days is considered normal.
Sat, December 24, 2022
day 2, menstrual phase.
27 days to your next cycle.
• The average bloodloss during menstruation is 35 milliliters (1.2 fl.oz) and anything between 10 and 80 ml (0.33 - 2.7 fl.oz) is considered normal.
Sun, December 25, 2022
day 3, menstrual phase.
26 days to your next cycle.
• Because of the bloodloss during the monthly menstrual cycle, women require more iron then men.
Mon, December 26, 2022
day 4, menstrual phase.
25 days to your next cycle.
• Many women experience uterine cramps during menstruation.
Tue, December 27, 2022
day 5, follicular phase.
24 days to your next cycle.
• The lining of the uterine wall is now at its thinnest. The levels of progesterone and estrogen are now at their lowest.
As a result of the increase in Follicle Stimulating Hormone (FSH), five to seven tertiary follicles will be utilised. One of these will become the egg cell.
Wed, December 28, 2022
day 6, follicular phase.
23 days to your next cycle.
• The selected follicles have been developing for almost a year in a process known as folliculogenesis. The follicles vie for dominance.
Thu, December 29, 2022
day 7, follicular phase.
22 days to your next cycle.
• Due to the influence of several hormones most follicles will die in a process known as atresia. One or two will remain and become mature follicles.
Fri, December 30, 2022
day 8, follicular phase.
21 days to your next cycle.
• Fertility increases as the follicular phase progresses.
Sat, December 31, 2022
day 9, follicular phase.
20 days to your next cycle.
• As the remaining follicles mature they produce more estrogen. The estrogen ensures that a new edometrial layer is formed in the womb and that cervical glands produce fertile mucus.
Sun, January 1, 2023
day 10, follicular phase.
19 days to your next cycle.
• The time required to recruit and select the most dominant follicles can result in variations in the length of menstrual cycles.
Research has indicated a long menstrual cycle can be shortened by placing a clear 100w lamp beside the bed five nights before ovulation.
Mon, January 2, 2023
day 11, follicular phase.
18 days to your next cycle.
• Sperm lives on average 1 to 5 days but can survive up to 8 days. If you are trying to conceive the best time to try is between now and the next 5 days. Bcause ovulation varies among women it is suggested between now and the following 9 days is the optimum time to try to conceive.
Tue, January 3, 2023
day 12, follicular phase.
17 days to your next cycle.
• Today and for the next three days is the best time to try to conceive.
Wed, January 4, 2023
day 13, follicular phase.
16 days to your next cycle.
• If the egg matures it will produce enough estradiol to begin the process of secretion of (LH) luteinizing hormone.
Thu, January 5, 2023
day 14, follicular phase.
15 days to your next cycle.
• During an average cycle the release of LH begins around day 12 and lasts approximately 48 hours.
Fri, January 6, 2023
day 15, ovulation phase.
14 days to your next cycle.
• Ovulation: The ovaries release the egg which travels into the fallopian tube. IF fertilisation takes plae it will occure today or tomorrow in this fallopian tube. An egg can be fertilised up to 48 hours after release.
Sat, January 7, 2023
day 16, luteal phase.
13 days to your next cycle.
• After ovulation the ovarian follicle which released the egg changes and is known as the corpus luteum or yellow body. Over the next 14 days this will produce progesterone. Progesterone helps prepare the uterus for implantation and maintains the lining which provides food to the newly implanted egg.
Sun, January 8, 2023
day 17, luteal phase.
12 days to your next cycle.
• Approximately 24 to 30 hours after fertilisation the first mitosis or cell division takes place.
Increased progesterone raises the body temperature in order to provide the optimum conditions for the egg. Body temperature is increased by 0.25 to 0.50 of a degree. Women who take note of their basal body temperature will notice that the luteal phase has begun.
Mon, January 9, 2023
day 18, luteal phase.
11 days to your next cycle.
• If fertiliation has taken place the egg and spermatozoon are known collectively as the zygote. The zygote will travel through the fallopian tube to the uterus. This journey of 10cm or 4 inches proceeds at a rate of 1.5cm or 0.6 inches.
Tue, January 10, 2023
day 19, luteal phase.
10 days to your next cycle.
• If the released egg is not fertilised within 24 to 48 hours, the rest of the luteal phase will be infertile.
Wed, January 11, 2023
day 20, luteal phase.
9 days to your next cycle.
Once the division of the zygote cells increases to 16, the collection of cells are known as a morula.
Thu, January 12, 2023
day 21, luteal phase.
8 days to your next cycle.
Sat, January 14, 2023
day 23, luteal phase.
6 days to your next cycle.
• A fertilised blastocyst attaches itself to the uterine wall. At the point where the cell meets the uterus the umbilical cord and placenta begin to form. This implantation can happen today or within the next few days.
Sun, January 15, 2023
day 24, luteal phase.
5 days to your next cycle.
• Shortly after the implantation of the growing embryo, other changes will take place in the body. One of the first signals is the secretion of pregnancy hormone human Chorionic Gonadotropin (hGC). This is the hormone picked up by pregnancy tests.
Mon, January 16, 2023
day 25, luteal phase.
4 days to your next cycle.
• The quantity of hCG increases but may still be too low to be recognised by the standard over the counter pregnancy test. The amount of hGC doubles every 2 to 3 days.
Tue, January 17, 2023
day 26, luteal phase.
3 days to your next cycle.
• An hGC bloodtest will now be able to detect the slight increase in hCG but it is still too early for a urine test to be accurate.
Wed, January 18, 2023
day 27, luteal phase.
2 days to your next cycle.
Thu, January 19, 2023
day 28, luteal phase.
1 days to your next cycle.
• From today a sensitive urine based pregnancy test might be able to detect hGC for a positive result. However, a negative test does not mean there is no pregnancy but can indicate that hGC levels are still not sufficient to be measured.
A new cycle starts here!
Fri, January 20, 2023
day 1, menstrual phase.
28 days to your next cycle.
• Although the menstrual cycle lasts typically 3 to 5 days, anything between 2 to 7 days is considered normal.


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