Pain relievers PLZ HELP!! IN EXTREME PAIN!!!?

My bf has a cavity and its gonna be expensive for him cause he has no dental coverage , he can't wait to get on mine because he can't for 3 more months and he's in extreme pain. He has to at least wait for a little ove a week till he gets paid to go in. Is there any pain relievers you know of for this kinda extreme pain , weve tried everything up to tylonol 3's with no help.?