Hi EarlyRiser,
Sorry to hear about your problem. I too suffer from TMJ problems and have done for the past 6 months. I have been told that since it hasn't been going on that long that it can be more easily treated.
I recommend you doing some TMJ exercises, its like physical therapy. Have you tried this? If not I can find a good website and send you the link with it explaining them.
Also try icepacks in the day and heat packs at night. Ice packs help with inflamation and heat helps to relax the muscle.
If none of this helps above see the dentist and see what they say, if they don't help perhaps see an Osteopath. I went to see one once and she did this sort of massage to my face which really helped but I couldn't go to further treatments as it cost like 50 pounds for half an hour treatment. But if you find Osteopath schools they do treatments cheaper, I found one in my city for 20 pounds a treatment and 10 pounds if you are a student or not working. So I am going to try them.
Mouth exercises helped me alot, maybe about 70% so I am hoping an osteopath will help me with the other 30%. I also heard they can help to realign the jaw if its out of alignment.
If you feel you grind or clench your teeth at night then a dentist can help you with that. Like I said its best to visit a dentist just in case its something to do with your teeth.
But because you say you were punched and had wisdom teeth out its more likely that put stress on your jaw.
My problem started after I got ill with the Mumps. Its an infection which affects glands on your face and makes your face really swollen, like you've been beaten up really bad. I got better after 3 weeks and the swelling went down but a couple of weeks later I started getting TMJ problems, all the swelling from the illness had put my jaw under strain. So problems with your jaw don't have to start instantly after you've been punched etc it can start weeks even months later. It sucked because when I got better I was really happy obiviously but had no idea that it could cause these long term problems with my jaw. Also people don't take it seriously because you look fine and you don't have an illness. But they don't realise how annoying it can be.
I get pressure feeling around my Jaw and some pain around the jaw and ringing in my ear. Prior to doing the jaw exercises etc I had constant headaches, shooting pains in the temple, ear aches, neck pain and my bite was off. So the exercises really helped.
So if your willing to try mouth exercises first (as this is free and may help you) let me know and I'll give you a link to a website that shows you how.
Hope I have been of some help.