Do i need to go to the doctor!?!?! HELP

Victoria
Okay had 2 depo shots they both make a total of 6 months on the shot i got off it February 17th afterwards had a lot of unusual periods like 3 or 2 in a month. 4 months later i go bacl to being normal heres the thing its now its almost 7 months off that damn shot and the cramps in my lower back and abdominal still hurts extremely bad whats it called high tolerance in pain. Could this be normal or do i need to go to the doctor? Keep in kind ivr bern ttc for 3 mo tjs now could ive messed up my chance in ever having kids? #imdying #pleasehelpme #againstdepo