During sex I had minor abdominal pain but I blew it off. After we were done it was a severe pain in my pelvic area and in the back too almost. (Almost like I had to poop)(sorry tmi). Anyways it has lasted for about 45 minutes. It made me very nauseous. The only thing that somewhat helped was laying on the floor curled up or in the hot tub. Those seemed to dull the pain a bit. Just wondering if anyone knows anything or it has happened to them. 

Thanks in advance