Suggest Remedy To Relieve Groin Pain Due To Bladder Sling Surgery

8 weeks ago I had my ovaries removed due to cysts and endometriosis. I also had a TVT Bladder sling surgery. I have terrible left groin pain. My OB/GYN who did all the surgery, 2 weeks ago, said that is where he attached the sling and to give it 2 more weeks. 2 weeks later it is just as bad. I cannot walk very well or sit for too long. Just too painful. Laying down helps but I have to be careful how I move my leg. Should I go back to him? or a neurosurgeon? should I stretch it? Please help. Any advice will be helpful. Thank you!!