Hello and welcome to EmpowHer,
I would suggest that with all the surgeries and procedures done to your reproductive system you may want to consider holistic/herbal remedies to your irregular period. Your body is not doubt having a difficult time regulating your hormones.
There are many reasons for this. Most of the reasons are listed in this article by EmpowHer:
Reasons for Having a Period Every Two Weeks: http://bit.ly/1Fqbsri