So I got the depo-shot on July 1 and well me and my boyfriend were drinking on July 4th night, i got drunk and we ended having unprotected sex but he didn't finish in me he said he was close to but I was supposed to get my period on the 9th but I didn't and I'm 2 weeks late still haven't gotten it , I've been emotional and moody I have had mornings were I feel nauseous I woke up this morning feeling a discomfort in my stomach but I don't know if its the hormones from the shot or is there a chance I'm pregnant?? I'm so worried. Help please .