(Until you can get professional help.) First, remember that pain is a symptom of a problem and not the actual problem. A tooth ache may be a sign of an infection. The important thing is to cure the infection. Stopping the pain is not the same as fixing the problem. On the other hand, at least in the short run, stopping the pain is a good thing too. Prescription pain relievers, along with antibiotics and needed treatment are the total approach. But until you can get professional care, we suggest that you take temporary pain relievers.
A good option is to combine over the counter Ibubrofen (Advil) 200mg and over the counter extra strength Tylenol 500 mg. Take one of each or two of each at the same time every 4-6 hours. If that is not enough you can increase that up to 4 Advil (800 mg) plus 2 extra strength Tylenol every 6 hours. NEVER place an aspirin tablet on the tongue or gum tissues since it is an acid and can burn the tissues. It only works internally by swallowing it and not on the surface. Other natural pain relievers and homeopathic remedies might work but be aware of possible drug interactions. Also, be aware that some people are allergic to Aspirin, Tylenol (Acetaminophen) or Advil (Ibuprofen). If you do get a reaction to any drugs, contact your physician or call 911 for help.