Toothache

I went to an emergency dentist appointment this morning because the pain in my nerve brought me to tears. I've lived with the severe pain for a t least a week & now am taking 800mg of ibuprAofen every 4 hours or so. I should be taking it every 6 hrs. I also have a pulsating headache in the front part of head and tension throughout the back of my head every time I wake up. I wake up often because I'm sleeping generally 2 hours at a time. All this pain has brought me to tears twice and I can't concentrate on anything.