|Hi Zoey, I am from the UK and understand your position as my wife suffers from severe tmj. You need to
1. book an emergency appointment with your gp and ask them to prescribe you a muscle relaxant like diazepam as well as take constant painkillers.
2. Ask the gp to look up a renowned tmj specialist and refer you immediately. You may need surgery if your jaw is totally out but don't worry as this will fix the problem.
3. If the gp is not responding you must go to a&e at your local hospital and tell them you are in intense pain and your jaw keeps locking. This will get them panicking and get you treated by shortcut.
Make sure you demand assistance now and if you don't get it get a booking with the head of the gp practises. Your problem is advanced and will only be sorted with expert care. Good luck and don't give in.