My boyfriend and i.

My boyfriend and I had sex. Yes he has cum in me , but last night we had sex and I started cramping in my stomach and it felt like I had constipation. The cramps were like a shooting pain on and off all night. I started cramping earlier that day on the side of my stomach with shooting pain. I pretty much have been cramping for the past few nights and days on the right side down low. Was the sex to rough maybe a pregnancy possibly? My next cycle is July 3rd