Stupid question..but kind of legit..would like an opinion

Ok. I'll cut right to it. Me and my significant other at the time had unprotected sex in Aug 2016. Stick with me here. It was in that month 2 wks after that I was having what seemed like food adversions. I was really scared and nervous that month. I stressed myself out big time! A few months ago..I'd say around September, I started getting bloated on the right side of my abdomen. Near the belly button. Sometimes it felt like my waistline and my upper stomach were bloated. I also felt something like muscle twitches in that area a few times, but has stopped since then. I've had several negative urine test. I've also had a negative blood test. My periods have been normal, expect for when I took plan b. My gyno did an transvag ultrasound in like November as a regular check up..it was negative. Could I be experiencing an abdominal pregnancy? Am I just paranoid? It could be ibs...anyone?