I had a root canal and the dentist had to remove my front top tooth and put in a peg (?). He put me on antibiotics prior to this because my tooth under my crown had rotted and my crown came off. After he did the root canal and put on my temporary crown, my tooth ( or lack of ) started pulsing and my face swelled up, especially my upper lip and nose. I had to go to the ER and they gave me an antibiotic and anti inflammatory. It responded well. Now, two months later, it's the same thing. Yesterday I just had the pulsing and a bump under my gum above the missing tooth along with tenderness and slight swelling. I went in to the dentist office, he wasn't in, and they took an xray and gave me Cleocin yesterday. I woke up this morning, 2 a.m., and my face is swollen, headache and earache. Can you tell me what is going on? I'm losing faith with this dentist.