Possible TMJ? Please please read! In so much pain with it?

Hi i have had a kind of lock jaw for way over a year now..but over the past 2 weeks i have had constant popping/cracking and it feels like i have pulled something in my jaw. I went to the dentist because it was incredibly sore when the joint popped back and forward. So he said it sounded like it is inflamed and to take ibuprofen for a week and a half and heat packs and then to come back if it hasn't settled..i am in agony it seems like it is getting worse..it hurts so much to eat now and it hurts to swallow or move my mouth at all, is it possible to damage muscle in one side of your jaw? And about 2 minutes ago it just made a really loud crack, like bones crunching together, it's so disguisting!