PLS HELP, am I pregnant?

So I had unprotected sex a little over 2 weeks ago. I’ve being feeling very bloated, my stomach feels like it’s tightening, the sides hurt as well. My breast were hurting for a while and they do look fuller which kinda freaks me out. I’ve had a lot of mood swings and fatigue, at work I felt super exhausted after 2 hours. I do feel nauseous but not much. The WEIRD thing is I think I had my period, but it only lasted 2 days which has never happened!! Last month I was a week. It wasn’t heavy as usual but there was blood. I just need help and advice!!