Pain when bowel move across a particular area + pelvic cramp and deep rectal pain upon pushing during period. no period = no pain. cause of concern?

Not sure: With just this little detail, it is impossible to pinpoint the problem. Sometimes a woman can have endometriosis or another cause which is only apparent at the time of her period. Your first step should be to consult your gynecologist for a complete exam and to determine if any other tests need to be done. Good luck.

Endometriosis : These symptoms could be a sign of endometriosis. See your gynecologist to evaluate it and discuss the treatment options. Hope this helps.

GI exam: ASAP. May be a rectal fissure or fistula. You must be examined and treated.