Suggest Treatment For Pelvic And Abdominal Pain

I have been having pelvic pain my abdomen area is very tender. I had a std in the past that have been cured,but I'm not sure how long I had it before it was treated. After it was treated, I started to experience this... It hurts when I have sex it does not burn. However, I have a discharge it does not have an odor but it is thick I am concerned