When i'm done peeing a lot of blood drips out, stomach back and vag ache. on 4th set of antibiotics. what else is wrong, other than uti?

Complicated uti: If you have these symptoms and a doctor has been diagnosing you with UTI and antibiotics are not working. It's called a complicated uti. This means that either the bacteria a resistant or there is some anatomical or physiology abnormality that keeps the infection from being cured. A kidney stone is a good example. See a urologist you need ultrasound, ct and cystoscopy.