Thanks everyone for your replies. I went to the doctors a couple of weeks ago and got some antibiotics which made a bit of a difference. the ache is not completely gone though. I went and saw an endodontist this afternoon who took an xray and examined the tooth and said that there was no sign of infection. he commented on the root canal work that the dentist did on the tooth in december and said she used thermafill and he would never use that as a root filler. he said the filler didnt go down far enough and fell short and he would take the filler all the way down the canal. he said the filling was too high and he would lower it and seal it with some protective plastic. he also said that there appeared to be some opaque bits on the lower right side of the tooth which he wont know what it is until he goes in there but said it could be a bit of instrument??

all in all he wants to re do the work and repeat the root canal in the tooth. he said the first bit he will treat and medicate the tooth and 4-6 weeks later he will fill it all for a lazy $1600!!! this tooth has cost me a fortune!

i told him i researched implants and he laughed at me and said they wouldnt put an implant to replace tooth number 32 as there isnt enough room and the gum wouldnt handle it!!! so i freaked out again haha and still wonder how they would replace the tooth if RC fails me again.