<s>[INST] hi, little freaked out, my symptoms are: blood in semen for last few weeks, orange chunky like(pebble size) substance in semen, painful ejaculation as if there was a blockage in urethra, medium yellow pee, no back pains or thigh pain, the odd intermittent flick type pain in testicle, decreased libido, trouble with maintaining erection. had a test for gondheria and chlaymidia (excuse spelling) tested negative. tested myself because my girlfriend tested positive, again my results were negative which confuses me as well considering our sex life is active. ive read many posts on different sites with people having the EXACT symptoms, but cannot find any posts by anyone commenting on what it turned out to be after seeing a doctor(s), please help, the word cancer is scaring me [/INST] HiMost likely you have a prostate infection with E coli and not an STDThat said, you need an ultrasound of the scrotum just to check for possible testicular cancer </s>