Don't worry too much, this is quite common with either a bladder infection or a urinary tract infection. I've had a handful of both, and at times they did give me blood in my urine.

Take the antibiotics and if they gave you anything for the discomfort, take that. Usually the blood is just from the infection and the irritation that it's causing.

I was terrified the first time I had this happen. It's very scary to see blood coming from any part of your body, but I'm sure in this instance it's pretty normal. Some infections are just more severe than others.

Hope you feel better soon!