My 11 month old grand-son who was on Zantac who has a dairy intolerance was changed over to previcid about 2 weeks or so and just today wasn't acting like himself. He cried more than usual...seemed to be uncomfortable and has blood in his stool. His breathing at times sounds like it's laboring but not all the time ...even when he was playing today he was ok...then the next minute he sighs and sounds like he's trying to catch his breath ...as the night is going on his breathing sounds more labored....Should we wait for the pediatrician tomorrow or bring him to Hasbro Children's Hospital right now?????....Even his naps today where short...& he didn't eat much....