Why is there blood in my semen? One of my testicles is also twice the size of the other, and they hurt to be touched.

Close up on a man covering his painful crotch.

This sounds like a concerning situation that you should talk to your medical provider about.  It’s possible you have a sexually transmitted infection, though your symptoms could also be connected to cancer or injury to your penis. I would recommend seeing a doctor as soon as possible.

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