Patient's question:
I said I clearly had my period on May 30th, but the doctor marked it as June 7th. Is it about ovulation? He said if my cycle is 28 days, it should be around June 20th, and if it's 30 days, it would be around June 22nd. I had my last period on June 6th, and we had intercourse from June 15th to June 18th without breastfeeding. Then, on the 18th, I took the birth control pill three days after intercourse. Since the child is developing normally, he said taking the pill on the 19th would be useless. If it had taken effect, the child would have been miscarried, he explained. Three days later, he asked if I had intercourse after taking the pill on the 19th. I said yes. Later, he said, "According to what you said, you took the pill first, ovulated, and then got pregnant." So, was it already pregnant before June 18th, or did it get pregnant after taking the pill on the 19th and having intercourse again?Doctor's answer:
I'm glad to clarify this for you. The estimation of the last menstrual period (LMP) starts from the first day of the period, not from the day it ends. The estimation of the ovulation period is calculated by subtracting 14 days from the first day of the next expected period. In some cases, due to various factors, menopause may occur earlier or later, and this is also possible. You can calculate it based on your own actual situation to estimate approximately when you conceived. Birth control pills are not 100% effective, and there is also a failure rate. Breastfeeding does not always have the effect of contraception, and there is also a failure rate.