Sinuses or toothache

I have had an off and on again toothache and headache becoming a migraine at times, for about 3 days now. My tooth isn't sensitive to hot and cold nor is it sensitive to the touch. My headache is usually ALL over my entire head. The constant pain is in my bottom tooth 2nd to the last tooth, which is uncommom for sinuses but pain is known to occur in the botton jaw/teeth. I don't have any post nasal drip and my nose is not clogged, but I do have a nasty wet cough. I did go to the Dr today and he said that he didn't feel that it was sinus or teeth related but my blood pressure was elevated, 152 over 100. He did prescribe an antibiotic and pain meds for the headaches. I am just hoping it's not my tooth and is sinuses! Any suggestions and opinions are needed please! Thanks

I may not have posted under the right topic. Sorry for that!