Hi, For a week now I have UTI, I'm in Okinawa Japan visiting my fiance at his base, Since they don't have much cranberry jiuce here I've been using Japanese Vitamin tea to help with my bladder. As well all natural lemon vitamin water, plus enough water throughout the day, which by the way it's beeen helping a lot. Just this morning i went to the bathroom and there was a bright red blood, small not too large. It also still little burn while peeing. So is it the cause of UTI for the blood? if so, do I need to seek a doctor immediately? I'm sexually active, it it the cause of it as well?