Well I can't remember how many days Izzy was on the first round of meds but as soon as that was finished I had to take her back in with another stool sample for them to check. It still was not cleared up so we went on another round of meds. Then back in for another check up with stool sample and then finally it was cleared up. It worked out great for us since we had to go back anyway for all her puppy shots so we were not doing extra vet visits.
Keep us posted. Don't worry it does go away eventually but you have to give the meds on time and go back to the vet for check up.