My BP has been doing something like that lately, except he recovered from a RI 3 months ago, I heard a little whistling but its like i hear it and it stops for a few hours, and I spent all my mony on th last vet visit, litteraly. I'm only 13, the only way I could get him was if i promised to pay for every thing, so m i no thi sis kinda off topic, but how long should I wait before i no for sure if he has an RI before I go get a prescription.