Thanks for your query, I have gone through your query. The pain the upper tooth can be because of the tooth infection(acute apical periodontitis). Nothing to be panic, Consult a oral physician and get the tooth treated with root canal treatment or extraction of the tooth. Get a radiograph done to see the extent of the infection and suitability of the tooth for the treatment. If i am your treating doctor, i would have prescribed, a course of antibiotics like amoxicillin and metronidazole (if you are not allergic). Along with antibiotics, you can an analgesics like diclofenac for the pain. But these medicines will provide a temporary relief. Once you complete the course, try to get the tooth treated as early as possible. The numbness can be because of the pressure over the nerve by any cyst or tumor secondary to tooth infection. you need to take a radiograph like OPG to confirm the diagnosis. Mean while you can take a nerve regenerating drugs like multivitamins particularly, vitamin B6 and B12. Take care of the part which is numb from hot, cold and sharp objects, because you will not be able to make out the sensation. I hope my answer will help you, take care.