Help me get to the dentist :(

Hello . I desperately need to go to the dentist for this one bad tooth but I can’t afford it or insurance. It’s killing me. I can’t eat, can’t sleep. Please help if you can. I would take a picture but it’s in the back of my mouth. I can try if that would help. It wasn’t as bad before but now the whole side of my face hurts, it hurts to brush them (and I am very big on hygiene), also my ear an eye hurt... not to mention the non stop migraine. I’m not into asking for help but I have nowhere else to turn. Would you please help me?