You could have endometriosis. That is a huge sign of endo. I recommend that you contact the endo association to find an endo specialist near you-- a general ob/gyn does not know enough for proper treatment.
http://www.endometriosisassn.org/
I hope this helps,
achilles2
After you use the bathroom are your bowels hard? If so, it could be really bad constipation especially if you are straining when you use the bathroom. Hemorroids and/or anal fissues could also be the cause of your symptoms if you have been straining during a bowel movement. Have you tried an OTC stool softner like Senna? Miralax is also really good but it will also stimulate your bowels to move.
I would recommend that you just go in to see your primary care physician. He/She can then refer you to a specialist if needed. I hope you feel better soon.
femmy