What does it mean when you pee blood and your stomach cramps when you pee?

Hematuria: If you have hematuria (h), you need to find its cause. First have a urine culture to see if you have a uti. If not, see a urologist (u) for an evaluation. Of the h. The u will order a renal ultrasound and an ivp to assess the state of your kidneys. If those tests are negative, a cystoscopy, to see the bladder wall, may be needed. Your stomach problem is probably unrelated to your h. Good luck.