I've had blood in my urine for three months (March, June, July) in July blood amount was classified as gross. Ultrasound was negative any suggestions?

Gross Hematuria. It can be from an internal or urologic origin, US rules out a few serious things, but need further testing. Get a basic internal evaluation and blood work to rule out renal cause, urine cytology, CT urogram, and urology consult should be in order.