Hi! I've Been Masturbating Just Recently Without Any Penetration, Just

Hi! I've been masturbating just recently without any penetration, just pure clitoral stimulation. To my dismay, I noticed blood in my urine. What could be the possible cause? This really made me worried. About 3 months ago before this thing happened, I went to my OB but everything was normal. In the past year, I was diagnosed with having cyst but that was already treated. hope you can help me.