From this period on your baby will be able to distinguish between dark and light and although his eyes are still closed, like you he can tell the difference from night and day.
During the time of your pregnancy you are more likely to develop cystitis as your growing uterus puts pressure on your bladder making you feel the need to urinate more frequently. It is more likely that urine is left in your bladder making it susceptible to the germs and bacteria which cause inflammation. Additional sources of infection are the increased amounts of nutrients now present in your urine.
Progesterone replaces hCG
Starting this week the pregnancy hormones (hCG) will steadily be replaced by progesterone which can make your body weaker and your bowels sleepy. This can result in harder stools and constipation due to an accumulation of matter which the bowels take longer to process and excrete. It is important to maintain a healthy and varied diet with plenty of fiber to ensure this doesn't lead to the development of hemorrhoids.