Thanks for your reply.
Blood in the semen is called hematospermia. This condition though alarming, is a very common symptom, and is most commonly due to inflammation within the male reproductive tract (prostate or seminal vesicles), but can also be due to infection. Also in most cases no further diagnostic workup is needed, however, in some patients, hematospermia may be the first indicator of other urologic diseases. Therefore you need to consult with your doctor preferably a urologist, if this does not resolve itself in a week or two, or if there is severe bleeding, or if associated with other symptoms such as abdominal pain, and your doctor will just do a physical examination.
Hematospermia often resolves on its own, but even one episode of bleeding into the seminal fluid will take a few weeks to clear up completely.
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