I'm 17 and about 200lbs or over. I got my nexoplanon implant July 2014. i had unprotected sex with my boyfriend last weekend about 3 times. All three times he did not finish in me. But i was supposed to get my period yesterday and didnt and i have yet to start today 1/29/17. I am constipated, having small cramps, and my brest are tender but the thing that is making me freak out the most is that my nipples are pointing out but they are not hard. Their soft. I don't think my nipples having gotten bigger or darker. I'm extremely terrifed to tell my dad so i can go to the doctors and get a test there. What should i do?