Sometimes there may be small lumps (clots) in the blood.
Most of the time it's not obvious what causes blood in semen and it goes away on its own.
But it's important to get it checked to make sure it's nothing serious.
- you have blood in your semen
A GP can check for common causes and refer you to a specialist for more tests if needed.
Blood in semen does not usually need to be treated. It often goes away by itself in a few days or weeks.
If a cause can be found, this may need to be treated.
For example, a urinary tract infection (UTI) or sexually transmitted infection (STI) may be treated with antibiotics.