Root Canal Abscess

Hello,
At least 15 years ago I had an abscess tooth and the naturopath tried to heal it. After 6 months and having puss come out of the gum I was sent to a dentist who did a root canal after antibiotics. The antibiotics at that time started with the letter T. It never felt quite right and sometimes it would feel spongy.
Then I would occasionally get tenderness in this area and the gum was different on this side. Later on I was sent to a different dentist that did dental surgery and cut the gum saying this area was infected. It never healed the way he thought it should and his attitude was that it was my fault. Anyhow nothing more was done.
Yesterday I woke up and there was such a pressure on this tooth I thought I had clenched my jaw all night, yet my jaw w.as not stiff. And it has gotten steadily worse.
I have taken 30 c of hypernicum with no result. Last night I had 12ch of heparsulph and the pain/tenderness receeded somewhat. Today it has gotten worse over the course of the day and I went and got Hepar Sulphuris Calcareum 6ch and took 4 pellets. The pain receeded about 25%. I just took another dose of 3 pellets (*I an hyper-sensitive) and there has only been about 10% or less relief. So I do not think I have the correct remedy.
I appreciate the help you might give.