Hi. I am 39 yrs old, 6"0" Tall, male, approx. 220 lbs. and I had a vasectomy approx. 11 months ago. Medical history is generally clear otherwise. Yesterday I saw small red stringy pieces in my urine at the start of urination two times in a row. I exercised in the morning (push ups and bicycle exercises - fairly intense - 3 sets each) and I think I was a little dehydrated during the day (urine was a little cloudy, didn't drink any water after workout but drank coffee). How alarmed should I be? Thank you.