Why is blood popping up in my sperm after i have intercourse? it doesnt happen all the time but it happens

Many possible causes: Possible causes of blood in semen include: Infection, prostate surgery, testicle inflammation, excessive sexual activity or masturbation, prostate cancer, trauma to the testicles, vasectomy, warfarin side effects & testicular cancer. Although blood in the semen often resolves without treatment I strongly encourage you to get a general medical exam as soon as possible. I wish you well!