Suggest Treatment Of Sinus Infection And Tooth Abscess

About two months ago I went to a dental school because my top last back molar filling came out. The dental student hit my last back molar and the molar in front of it (2nd molar)with a tool. To me it seemed the student was hitting my 2nd molar really hard and I thought Wow, my tooth must be really strong on how hard he is hitting it. Anyway, the filling in the last top molar was re-filled and upon getting ready to leave my 2nd molar was really aching - the tooth that was not worked on, just hit by a tool. By evening my pain(ache) was about a 9 and I was putting my hand to my jaw because the pain. I wondered if the student quite possibly cracked my tooth? It s been two months now, the pain persists, 7 or 8, with sometimes a strange kind of like slight perhaps salt taste coming from mouth. The problem is I became sick with a tooth abscess on other side of my mouth, within about a week, and now possibly sinus infection (started the last few weeks), and the infection has continued over two months with fevers and aches. I have been taking pain relievers for the fever (low-grade) and some dental procedures (extraction, root Canal, and deep cleaning - feeling worse not better) but that 2nd molar I thought it was better but I did not realize the tooth is still hurting because pain relievers. I still have a funny taste. Dentist tells me it s sinus . But this pain in 2nd molar and funny taste from top of tooth was before I was sick? I really think my 2nd molar may have been cracked. The pain (ache) hurts where I want a root canal. How do I get the dentist to really listen to my concern. Do I have to wait until I get over this infection, maybe in the sinus being cleared before the doctor will take me serious and think maybe there is a crack? My 2nd molar has not felt right since the dental student hit it. And if by chance there was a crack, could that cause an infection, or just pain (ache) and sometimes funny taste from top of tooth? I ask this because for two months I ve been on three different antibiotics and my body can t get rid of this infection (low-grade fever and body aches persists) and doctors trying to figure out where the infection is coming from. Please help, any much needed advice would be very appreciated. Thank you.