Over the years Ive seen all kinds of patients go thru a wide variety of things after being diagnosed with OC. You just never know what can happen. We all have a huge fear of having a recurrence. That probably is part of why we all get so nervous when something unusual pops up. At least after going thru OC once, you have learned to not let anything go.
The only unusual thing I see in your situation is 5 months of antibiotics. Thats a very long time! Im sure you are happy you wont need to take those anymore.
It sounds like your doc is on top of this. Im sure when they get in there during surgery they will be able to know so much more info. Im hoping its just scar tissue.
Best wishes with everything!!!! Hopefully its nothing serious and you will have answers and a speedy recovery.
PS... Im ok, no complaints here. Wishing you a happy and healthy new year