I am 19. I have been experiencing pain in my abdominal area now for about the last 5 years. It happens about once every month or so. It does not seem to be related to my period, it just happens randomly. To describe the pain, it is an ache in my bladder area, and a sharp string pulling like pain from my belly button, down to my clitoral area. And also a sharp throbbing pain in my tailbone/anus area. It typically lasts for an hour or so, and then goes away, it returns a month or even 3 months later. It hurts to stretch out, use the toilet, or even stand straight. I have only one sexual partner, my husband, and neither he nor i have any type of std. it also doesnt hurt of i have to urinate, only if i have to push. What are some possible diagnosis?