I currently underwent urine testing for sti screening,findings were that my urine contains blood but at the time i had no burning sensation when urinating,itching or any discharges,let alone blood. i was given medication but still i don't feel well?

Work up needed: Microscopic hematuria, or blood cells in the urine only seen under a microscope is a worrisome process. It suggests a problem in your kidneys/bladder/prostate or outlet. Cause can be simple or as bad as kidney/bladder cancer. It is fine that you are free from STD's, but this is something you should seek a proper evaluation for. I hope it is something simple.