Probably nothing to worry about. I get up three times a night to pee and often poo followed by another when I stand up. You're PSA looks good and I wouldn't think there is anything to worry about there. I've had 7 cystoscopy's over the last couple of years and they are always uncomfortable but are harmless. When I am having them I just think, well it's only 5 minutes or so of discomfort and I'll all be over!
Did they find out why you had blood in your pee?
If you're worried then peace of mind is important. mention it to your doctor or ask you're doctor if you can see a consultant.