I have an 8 year cat that has been very healthy for the most part. A couple days ago I notice blood in his urine. Any help with this would be appreciated. He doesnt seem to be in any discomfort and still runs around 100 miles an hour like always. One thing i have noticed and the fact he is never outside and always been an indoor cat and is fixed. He whines at the back door alot these days??? He eats normal and drinks normal.....He's an Iam's cat from the day I got him at 6 weeks. The blood seems to be substantial enough the I am very concerned.