I'm pretty sure it has something to do with my hip flexure. It will be fine for a while, then suddenly there is this loud popping sound, and there is pain in my left groin. Sometimes I can make it pop back in immediately, but other times I just have to deal with it for a while. No, my hip is not dislocated.
I recommend you see a orthopedic medical specialist for your condition and have them perform a diagnostic test. That way, you can find out the nature & extent of the problem and a treatment plan can be formed.