I own a brb and every blue moon she seems to make a soft "pop" noise(I have to hold her head near my ear), I've previously owned a rtb, and he died of RI, which I didn't see any signs of RI, but when I went to get him checked out, a day later he died.(the vet didn't have the right meds due to a late shipment :[[) So what should I do?(I'm 16 and currently broke) should I try to give him some vitamins, or try something esle? (Thanks)

