i'm 16 and i have extremely irregular periods. like i havent had one since march (4 months) and i has unprotected sex and he "pulled out" (an extremely dumb idea, which wasnt thought out at all) a week ago. and i'm not on birth control. i've had no signs of pregnancy besides an upset stomach, but it just feels like anxiety or guilt. no throwing up, and tmi, pooping alot. thanks in advancez