sinuses, face & teeth pain/nerves

I don't know where to start with this! About 2 years ago I had a sinus operation then it didn't work then i got a sinus infection so had to have another to relieve the pain! A while after I started getting really bad tooth ache in just the right hand side of my face, not just one tooth all on the right hand side. Since then I can't and haven't been able to eat on that side of my mouth as I get excruciating pain it leads to tears! It also ramsomly comes and goes on its own. Now when i get pain the whole of the right hand side of my face is effected, my jaw, my ear, my neck, and stabbing pains in my temple. The only thing that soothes it is s hot water bottle! I have tried amitriptilyne, codeine, and others but nothing has worked and the doctors have tried and have no idea what's wrong. Lately when the face pain gets worse I've got a cold or sinus infection, my theory is they messed my nerves up with the operations and when I get an infection my sinuses swell and reds against the nerves. But I still don't know if that's right or what is actually wrong with me! Also tried accupuncture but that didn't work, most docs say I'm fine as they can't actually see anything wrong with me! I also get dizzy and the other day I went dizzy and couldn't see proerly for a while! I get loads of colds and sinus infections one after the other since my operations. Can anyone help? Does anyone have a clue what could be causing it all? I'm 21 and it's horrible! And eating only on one side of my mouth for 2 years isn't nice! I've also seen the dentist they've looked into my teeth and there's nothing wrong with them. Thanks!