You can have kidney stones causing blood in your urine without an infection. There also may be an infection that is not being detected. You need to go to a good urologist ASAP.

The liver thing is serious too. If a drug is causing liver problems, I would not take the drug regardless of how much good it is doing. This needs to be aggressively seen about. I am not sure whether you need an internist or a gastroenterologist.

Meanwhile, don't make liver issues worse with drugs. This includes acetaminophen (Tylenol) and alcohol. Statin drugs are toxic to the liver as well.

MRI's can see right through fat. I would think the CT scan could as well.