I've had excruciating pain in my left pelvic area for over 10 yrs now. The pain starts a few days or sometimes immediately after my period has ended and lasts anywhere from 3-10 days and feels like there is a beach ball surrounded by spikes inside if me. I also sometimes have hemmeroid flare ups afterwards (RANDOM). This pain subsides a little bit after I urinate or pass stool. I seen a Dr a few yrs back who did not examine me but did check my blood and nothing came of it. Any ideas?

To have 'any idea' would be partially diagnosing you which we cannot accomplish here. Nothing can be diagnosed on the internet.
You should have found another doctor after the last one. Just testing your blood hearing symptoms as you describe is not a way to diagnose your problem properly. You say you have had this for ten years; why have you suffered through this for l0 years and not found a satisfactory doctor to treat you ? My suggestion, see another doctor.