I can really sympathise with you, I few months back I had the most horrific tooth ache, and I didnt have a dentist, I was awake for almost 72 hours with constant pain, I went to see an emergency dentist who put in a temp filling and told me I need to see a dentist !!!, I booked myself into the dental hospital who took an xray, said the tooth needs either a root canal or extracting so I said take the bugger out, they said sure, come back in a month and we will take it out !!!, I even went to see my GP as the pain was so intense, I tried all methods I could think of, Clove oil, ibuprofen pain killers, gels you numb your gums with, nothing touched the pain as it was the nerve in the tooth being attacked by bacteria, eventually I found something that worked.
Sliced cucumber cold from the fridge, pushed onto the gum seemed to work for about 15 mins then I had to change to another cold bit, and I found icy cold water to do the trick too, only problem with the water was I had to keep getting a mouth full of water to numb the inside of my mouth then spit it out and get more every 5 mins or so, no sleep, but also no pain. eventually the nerve died and there was no pain but it took about a week. Never again !!