So sorry for all of the pain...
My situation was a bit different and a long time ago plus I have a k pouch...but...I started having intense pelvic pain on the right side...first they thought endo, then they found cysts around the right ovary and inflammation in the tube (salpangitis), after a HSG (hystérographie ) they put me on massive doses of antibiotics but ended up operating (open surgery )... my pouch sits on the abdominal wall so I was terrified.
The surgeon did a fantastic job (general surgeon with my obs/gyn in the o.r.) and cleaned up a big mess of infection, cysts, adhesions etc and even 'opacified' my tube hoping for it to heal up normally for fertility reasons.
They put me on progesterone for 3 years to allow the region to heal and prevent reccurance...it/they never came back.
You need to speak openly to them about your fears, have your C/R surgeon present and ready to dive in if needed.
Good luck and I hope that they get this all straitened out for you.