hi i`m new, my guinea pig marmite has been on antibiotics for just over a week now he was on baytril for a uri i took him back to the vet after 8 days as he was hardly eating and they gave me septrin and metacam but his appetite has not changed i have been giving him liquidised pellets with some probiotic in but he will only take 1-2ml at a time. has anybody got any ideas what else i can do he has lost about 15grams since this started