In October Of 2015 I Had My Overiese Taken Out

In October of 2015 I had my overiese taken out that complete a full historectomy. I waighed 175. Today Dec 18 2016 I waigh 120. I eat very well and was exercising. Today I can hardly get off the couch. I am in constant pain. I don't want drugs I want answers and no one that I have seen can come up with answers. Please help to find out ware to go to get answers. My life has become unmanageable.