I have a tooth that lost its filling. now I believe I have an open nerve exposed. I'm on antibiotics *METRONIDAZOL500MG* this is the second anitibiotics I have been on in the past three weeks. The first was *AMOXICILLIN500MG* finisihed the prescripton in full. Now the roof of my mouth, my gums, the whole left side of my face is swollen, the under side of my left jaw hurts, the left side of my face feels numb, and it kinda hurts to swallow. Please help me if you can........my cell number is 228-222-0052 leave message if I don't answer. I may be at work and I can't answer my phone with the boss present. I can email pics of the interior of my mouth showing what's going on with it and my tooth. Please let me know if you need pics emailed to you.