Can someone help me please?

I have the WORST toothache ever! I can't get into the dentist for 3 more days, I've been taking antibiotics but the toothache is still there. Help please! I'm ready to yank it out myself! I've been using the OTC products, they work for maybe 10 minutes, then its THROBBING again. This is this FIRST cavity I've ever had and I never, ever, want another one!