Hi,
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The symptoms could be due to pelvic adhesions. If the ovaries were left behind and are functional, it can also trigger endometriosis due to hormonal changes (if there were implants left behind). The exact cause can only be made out after careful evaluation along with a diagnostic laparoscopy examination. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Be regular with your medications and follow the instructions given by your treating doctor/gynecologist.
Take care.