<s>[INST] I normally have my period on time. And about two weeks ago, me and my bf had sex, and he pulled out, without a condom. I was supposed to start my period two days ago, and im 15. I m freaking out. I thought i was going to start today, cuz i had all the signs, but i haven t. could i be pregnant? [/INST] Hello dear, i understand your concern. In my opinion the chances of pregnancy are less with pull out method. But rarely the pre-cum might have sperms which might result in pregnancy. So it can be confirmed by doing a urine pregnancy test if the period is delayed more than a week. Because the test usually gives accurate results a week after missed period.Don't worry. The chances of pregnancy are rare. Avoid stress regarding the thought of pregnancy because even it might delay the period confusing the situation. So relax and consider doing the urine pregnancy test. Best regards... </s>