Then Again?!?!?!

So Tyler has been doing just fine on the new Formula. After Rachel had gotten sick we decided that he has had a stomach virus that just needed to run a long slow course. He hadn't vomited in three days. The pediatrician said we could switch him back to the old formula and see what happens. Ben gave him a couple of bottles today 1/2 new and 1/2 old formula. Tyler could not hold it down. We still don't know if it's the virus or the old formula. So we are going to keep him on the new formula for a while and try the old formula in a couple of weeks. And through all of this Tyler smiles and acts normal. He barely pauses to empty his stomach and then goes about his day like nothing happened.