Hey everyone!
About a year ago, I went in for routine full check up and cleaning of my teeth. Additionally, I had a couple cavities filled at that time too. About a week after I noticed a bump on my lower gum, just under the first molar. I didn't think anything of it at first, I thought it was a canker sore, so I left it. It wasn't big nor bother some, and I soon forgot about it.

6months later when I went back for another cleaning, I had forgotten about my little bump and the hygienist did not notice the bump still there. Once again, I had forgotten about it and it wasn't big or bother some.

I went back for another appointment 4 months later and my dentist took some X-rays and informed me that I might have some infection underneath my tooth at the base of the roots. She didn't seem confident, but claimed that there is a small 'shadowy' area in the X-ray and my best bet was to have a root canal done.

So I went in and got the root canal, but I had some complications with it. I had more than 4 roots in this tooth and it took the dentist 2 appointments to finish. My xrays were sent off to a specialist and was given the "all good".
However, I've noticed the bump (fistula) is much bigger than it was before and often fluctuates in size. Bleeds when I brush and my gum/ jaw is obviously more puffy/ swollen

Did the root canal just make things worse?
What are my options now that I spent thousands on the procedure that didn't work.