Post hysterectomy pain in abdomen

Hi all. I have a full radical hysterectomy almost 2 years ago (stage 1b cervical cancer), was extremely lucky and had good margins - just recently I have been getting a strange pain in my right side, with almost like a contraction feeling when I open my bowels or cough - there is no lump and no pain but could this just be a hernia or should I be contacting my oncologist? Not had a face to face meeting since Jan 2020.