Thanks for all these additional details.
I can understand your concern.
Well, passing blood clots in urine along with passing blood with semen after ejaculating, is indicative of underlying medical issue and should be further evaluated by doctor.
Possible reasons are-
-Inflammation of the ejaculatory ducts,
-Infection(including STD & non STDs),
-Epyditimitis- The cause of your epyditimitis could be bacterial, or an STD source.
The most common cause with such symptoms is- Prostate enlargement.
For the time, take plenty of fluids and drink Cranberry juice.
You need to undergo-
-Digital rectal examination,
-Urine culture test
After tests, precise diagnosis can be achieved.
Please consult your doctor for clinical checkup and get appropriate management. If required, they may refer you to Urologist and get it managed.
Hope this helped.
If there is anything else that you would like to know.I am happy to address your follow-up questions. Please use the REPLY BUTTON to reply back to me