Thank you for your question.
Did you have a full hysterectomy or partial? Sounds like you had the surgery as a treatment option to fight Cancer. If your womb or cervix were removed to prevent or treat cancer, you may need another test called a vault smear. Did you have this test? Because this test is used as a follow up treatment, that tells me that the Cancer can return after a hysterectomy.
However, you should follow up with your doctor regarding new symptoms and changes in your body to determine what's truly going on.
I hope this helps.