I Just Had My Third Coloniosprey, And Went In For

I just had my third coloniosprey, and went in for the procedure feeling good. I was able to walk and move. However, when I awakened, I knew something was wrong. I was in pain, couldn't walk or move. As my husband and I drove home, we talked about what could have possibly taken place during the procedure. I want to know if it is possible for a somewhat simple procedure can turn into a nightmare? I hurt so bad and the pain is excruciating. Should I sue the hospital or what? I know something happened during that procedure, but how can I prove it?