see a urologist. you are having symptoms suggestive of prostatitis (an infection or inflammation in the prostate gland). i am not sure if there is a relationship with your bowel/diarrhea and fatigue issues so this could easily be an entirely separate medical problem.
diagnosis? had a uti and now experience pressure above the anus and testes and ejaculation does not feel same. original symptoms: (burning before+after urination small amount of urine coming out testicular and abdominal discomfort green tinge to urine back pain *no discharge* fatigue diarrhea cramping of anus testes area). lingering and recurring symptoms: (slightly discolored urine (greenish cloudy) ejaculation doesn't feel the same pressure where the anus and testes meet change in ease of bowel movement back discomfort). 1st std and uti came back "inconclusive" 3 weeks later 2'nd= negative