EDIT; I can’t reply to everyone individually but thanks for all the suggestions! Opiates are out of the question, doctors here will only prescribe those in terms of absolutely extreme suffering or end of life care. I also don’t particularly feel interested in developing a hard drug habit. Diclofenac and such are available but also only on separate prescriptions, I’d have to visit another doctor for that. I’m well stocked on paracetamol & ibuprofen, and apart from that, lots of ice cream, pudding & soup :)
Also, since a fair few people seem to doubt the veracity of my story, here’s the 22 extracted teeth (the other 10 were already gone in previous extractions).
Clove oil. You can get it in a tiny vial at the chemist. You pick off small bits of cotton, roll them into little balls, and dip into the clove oil. Wring out most of it against the side of the bottle, then place directly on the site of pain and bite.
In your case you might want to make strips of cotton or something.
It tastes absolutely horrible and will make your whole mouth numb, but it is antiseptic and will give you enough relief to sleep.