I agree with the "see the doc now" suggestion. I had "discomfort" (yes, it hurt, but after a few colon issues, it was not debilitating), and yes, blood in semen for weeks (better described as used motor oil - bedsheets were ruined), but nothing that stopped me in my tracks.
I was told to "take it easy" for a few days. Bowling does not fall into that definition for me, but then I'm not hard core on anything athletic.
Regardless, insisting on seeing a doctor is appropriate. You will get to understand that you must speak up for yourself to the medical community.
My adjuvant IGRT journey (2010) - www.healingwell.com/community/default.aspx?f=35&m=1756808