I have severe tooth decay for quite sometime and half of my tooth has already disappeared. However, I never had any special pain except a sharp pain whenever I used to drink hot/cold drinks. Last night suddenly I experienced the worst pain ever. It was so throbbing and I felt like stabbing pain is much, much better than the pain I experienced. It started from the lower jaw last tooth and extended to the back-portion of the brain-1; to the ear-2; to the throat-3. It was a shooting pain lasting for more than 10 minutes. I was just holding breathe, taking short breathes in order to control the pain. It was very severe. This morning I experience it again for 10 minutes and then after a gap of an hour I experienced the same pain. Now, every hal hour I get this pain. After immediately calling up my friend, I took NSAI. My question is--how long will it take the bacteria to enter the blood. I fear that bacteria entered the blood stream.  If thats the case, then is it fatal? I am bit tense.
Thanks for using Chat Doctor. Read your query. The pain suggest that there is an infection caused due to the carious tooth (per apical abscess). I would advise you to take ibuprofen tab(if you are not allergic to any medication).you will also require an antibiotic). Please consult your dentist and take it as soon as possible. Do not apply any hot pack to relieve the pain. Do saline gargling. Have a radiograph done and get the needful treatment done either root canal treatment or extraction. Hope this was useful. Thanks and regards.