Pregnology - all about pregnancy dates & numbers
Pregnanct testing
When can I try a pregnanct test? This pregnanct test calendar shows you what is going on inside your body,
and when you can take a home pregnancy test. Move over the little images to see a bigger image!
My ovulationMy pregnancy testMy Due dateDays of pregnancyABCDEFGHIJKLMNOPQRSTUVWXYZ

When can I do a pregnancy test?

Length of your cycle days
Length of your luteal phase* days
First day of your cycle*


*First day of cycle = First day of flow
*Luteal phase = days between ovulation until next period. Usually 14 days



Things to know

  1. HPT means Home Pregnancy Test. HPTs are cheap and come over the counter.
  2. hCG is human Chorionic Gonadotropin. A pregnancy test measures hCG. hCG production starts at an early stage of development, just a few days after conception, before implantation in the uterus and appears in the blood and urine of pregnant women
  3. 85% of normal pregnancies will have the HCG level double every 72 hours.
  4. If you are very early in your pregnancy, and the HCG level is below 25-50 mIU/mL, the test will be negative.
  5. The American Pregnancy Association cites the following chart as normal ranges of hCG for the number of weeks after the woman’s last menstrual period (period of 28 days):
    3 weeks: 5 - 50 mIU/ml
    4 weeks: 5 - 426 mIU/ml
    5 weeks: 18 - 7,340 mIU/ml
    This shows that our suggested date may work for some, while it is too early for others.
  6. Some normal pregnancies will have quite low levels of HCG - and deliver perfect babies.
  7. There are two types of pregnancy tests. One tests the blood for the pregnancy hormone, hCG. The other checks the urine for this hormone. You can do a urine test at home with a home pregnancy test. You need to see a doctor to have blood tests.
  8. Blood tests can tell if you are pregnant about 6 to 8 days after you ovulate
  9. If a HPT says you are pregnant, you should call your doctor right away. You doctor can use a more sensitive test along with a pelvic exam to tell for sure if you're pregnant. Seeing your doctor early on in your pregnancy will help you and your baby stay healthy.
  10. Testing the urine first thing in the morning may help boost accuracy.
  11. Most brands tell users to repeat the test in a few days, no matter what the results. One negative result (especially soon after a missed period) does not always mean you're not pregnant.
  12. Visit www.fertilityplus.org for a good overview of HPTs.
  13. The amount of hCG in the urine is different for every pregnant woman. So, some women will have accurate results on the day of the missed period while others will need to wait longer.
  14. Some home pregnancy tests are more sensitive than others. So, some tests are better than others at spotting hCG early on.
  15. In a 2004 study, researchers tested the accuracy of 18 HPTs sold in retail stores. They found that only one brand consistently detected the low levels of hCG usually present on the first day of the missed period. This was the First Response, Early Result Pregnancy Test. The other tests missed up to 85% of pregnancies on the first day of the missed period. Most tests accurately confirmed pregnancies one week after the missed period.
  16. If your HPT is negative, test yourself again in a few days or 1 week. If you keep getting a negative result but think you are pregnant, talk with your doctor right away.



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