I sympathise so much with you... 2 weeks ago I had an abcess under a top tooth and an infection in a bottom wisdom tooth both at the same time.......oooch!! Couldnt eat, or even open mouth to get pills into!! Luckily my dentist got me in as an emergency within 1 hour of ringing!

Apart from the long awaited antibiotics and lots of painkillers (tried Nurofen, but Anadin extra worked better), a warm pillow helped - the sort that is normally for aches and pains that goes in a microwave - very comforting!! My pain now all gone and just awaiting to go into hospital to have the wisdom tooth out (which is impacted - yuk).

Hope you find a solution fast.... nothing worse!! Good luck.