Hi, Thanks for placing your query here. I can appreciate your concerns about your husband. urinating a lot means we have to rule out diabetes & urinary infection. blood in urine with hesitancy first diagnosis to rule out id urinary tract stone. He needs blood glucose check, urine routine ,microscopy & culture, as well as renal ultrasound to sort out the mystery. Many a times more than one problem may co-exist. Taking amoxycillin for sinuses should not be a concern. In the light of facts provided pls discuss with your husband s doctor. Hope I have answered your query. If you have any further questions I will be happy to help. Wish him speedy recovery.