i'm 15. i've been on birth control (Lo Loestrin Fe) for about 2 months. my boyfriend and i have unprotected sex a lot and he doesn't pull out. i haven't had my period since the week before i started the pill. i have a lot of mood swings, food cravings, and sometimes a little bit of cramps. the first month i had spotting for a few days. the second month is was a brownish color not even for a whole day. is there any way i could be pregnant or is this normal?