Did i pull a muscle or is there a medical problem?

Its been about two months since it happens,and i was carry weights for my back,butt,and legs than suddenly i felt a sharp pain next to my hip,like about the kidney area,and ever since than i wasn't able to work out anything besides upper-body workout and running,and today i tried again to work out my abs because there starting to go away,so im wondering if i pulled a muscle or something,if i did,is there a way to heal it?