In view of the past history, I suggest that you get expert advice in person and also get a pelvic/trans-vaginal sonogram to rule out a tubal pathology. Though, it could be a simple uterine cramp, things should not be taken lightly. Sometimes, when there is some pelvic infection
, such pain may be experienced. If so, it can be relieved with pelvic antibiotics and anti-spasmodics. Hope you find this information useful. Wish you good health.