<s>[INST] Hello docs n experts, Since yesterday I m ejaculating red semen. I noticed it yesterday while masturbating, even today I seen same thing when I was trying to confirm was it a normal one day case or a serious issue. Now I think it is a serious problem for me. Please help me. [/INST] HelloThanks for your query,based on the facts that you have posted it appears that you have ejaculated red coloured semen (Haematospermia) after masturbation ..This could be  either due to 1)Rough handling of your penis with firm grip of the hand resulting into injury to urethra while masturbating or 2) Infection of the seminal vesicle .Please consult qualified Urologist for clinical evaluation and get following tests done to confirm the diagnosis,1) Semen examination and culture .2) Trans Rectal Ultrasound scanning (TRUS).Further treatment will depend upon final diagnosis.Dr.Patil. </s>