<s>[INST] If im on birth control and had unprotected sex the day before thanksgiving, and my period came in December and this month, could I still be pregnant? Or am I worrying for nothing? I dont think he came in me. He said he didnt. He said I have nothing to worry about but Im still always worried after having sex. I dont wanna have kids any time soon. [/INST] Hello and I hope I can help you today. Birth control pills are greater than 99% effective in preventing pregnancy when taken correctly. If you took your pill every day and did not miss more than two pills in your pack even with sexual penetration and intercourse you are extremely unlikely to have conceived. In addition, you had to normal. The following two months which effectively rules out pregnancy. The first sign of pregnancy in the majority of women is a missed menstrual cycle. So when your case, you really do not have to worry about pregnancy. The majority of women use the pill alone is the primary method of contraception, without condoms or a backup method. I hope I was able to answer your question today, and that my advice was reassuring. Best wishes,  </s>