Patient's question:
On October 29, 2018, 09:13 I would like to ask, I had my period on the first of October and it ended on the fifth. Then, we had sex on the fifth and sixth, and also on the eleventh and twelfth. On the fifteenth and sixteenth, we had sex and took birth control pills. The day before yesterday, I took a pregnancy test and it showed positive. I want to know if I can calculate how long I've been pregnant for? Also, does taking birth control pills affect the fetus?Doctor's answer:
Based on your description, it is inferred that: Theoretically, the days of pregnancy are calculated starting from the first day of the last menstrual period. It is unlikely to cause significant interference to the fetus. Since the medication was taken before the fertilized egg implantation, it generally does not cause much interference to the fetus. If it is a long-acting medication, it is necessary to stop taking it for one year to one year before becoming pregnant. If you are still not reassured, you can undergo a Down syndrome screening or amniocentesis to confirm whether the fetus is healthy.