Hello, and I hope I can help you today. If you have not taken your birth control pills for two weeks and are having unprotected intercourse, it is possible that you could have become pregnant. Any woman of reproductive age who is not using contraception and having sex theoretically can get pregnant. Some women do have some spotting a few days after conception if the fertilized egg implants in the uterus, which is known as implantation bleeding. However, the majority of women do not bleed at all when they conceive, and pregnancy symptoms really do not start until the pregnancy is large enough to produce hormones, which really takes a few weeks after conception. Furthermore, is not unusual to have irregular bleeding and spotting after discontinuing birth control pills as well. So at this point, the only thing that you can do is wait until your menstrual period is due, and if your period is late, to perform a urine pregnancy test. Modern urine pregnancy test become positive within 10 days to two weeks after conception, so in a few weeks you will be able to reliably test to see if you conceived. I hope I was able to adequately answer your question today, and that this information was helpful. Best of luck in getting pregnant, Dr. Brown