I have a small amount of blood in my urine. Was running a low grade fever. Went in for a urine specimen test. So, far does not show a UTI, They are doing further testing. I am now on an antibiotic, I have a headache, and it hurts to urinate a little bit. What is your opinion. Could it be from pushing too hard when making a bowel movement. I am on blood thinners as well, and have aheart condition. Thank you, Steve