My jaw pops on the left side evertime i open it, could it be caused by past medication?

Probably not: This is a problem that requires a face-to-face meeting with your doctor. In that meeting, your doctor will listen to you, perform a throrough examination and possibly order labs or other tests. Based on this information, he/she will be able to tell you what's wrong and what to do about it.

No.: No, TMJ disk out of alignment. If no other symptoms, requires no treatment. If popping getting louder, with pain, limited oral opening, locking, clench/grind teeth, see TMJ expert. Any dentist can be a TMJ expert with the proper training and experience. Most commonly, oral surgeons, prosthodontists, and orofacial pain specialists. Ask your MD, your dentist and your dental society for referrals.