What should i do for a toothache thats causing me to have a migraine headache?

See a dentist: If you have a dental issue, get to your dentist who will stabilize your condition. Toothaches can act as headache triggers, but treating the headache ignores the underlying problem.

See a dentist: There are no at home, homeopathic, DIY remedies for a decayed/infected tooth. Please see a dentist ASAP since the pain will only intensify until it becomes unbearable.... and in the end, you're still going to have to see a dentist. Avoid the suffering.

See a Dentist: Most common cause of toothache is infection, and yes that can cause headache. Blocking the headache pain, however, will simply allow the infection to worsen/spread. So treat the cause, the infected tooth,To do that you will need professional help (Dentist) immediately. And nothing on the drug store or supermarket shelves will cure. See a Dentist.