So here's the thing. Im 19 and me and my ex had unprotected sex in July and August. I last had my period June 28-July 3. My periods have always been regular. Always get them right on time. I was supposed to get my next one July 28 but I didn't. I didn't think nothing of it I was like ok so its a little late no big deal. Then I noticed sometime at the beginning of August to the middle of August I would have these bad headaches, I was constantly sick to my stomach, I was throwin up, my boobs were becoming more sore, I was goin to the bathroom more but wasnt sure why, my sister had told me that I was being extra moody than usual, I was more tired too. I would go to bed tired wake up tired sleep during the day and this has been everyday. No matter what time i go to bed or wake up im tired through out the day. Ive been eating more too. Not alot but its a change. It might be stress but nothing has been stressing me out lately and the way i eat and the way my schedule is nothings changed. My August period was supposed to come on August 28 but never got that one either. I have felt horrible this whole time. I haven't taken a pregnancy test yet because I was waiting for my periods to come but they haven't yet. So my question is could i just be stressed out or pregnant? Cause I really don't know.