has anyone....

I've been having this pain in my lower left pelvic area? like the fallopian tube? I previously had a MC in Aug 2017. They said it was ectopic. I've noticed recently ive had pain or "twinges" more frequently. I called my OB and she said I was fine. So I called another OB office today for a 2nd opinion. but tonight I had sex and that pain went from a 2 to a 8/9 real quick. any idea what it could be?