Hello,
Since you have a history of hysterectomy, it can be due to stenosis or adhesion formation also. In that case, the adhesions have to be broken. I suggest you to get it evaluated from your gynecologist.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
See your Dr about this. I'm thinking possible scar tissue from your surgery.