will
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        my 7 1/2 month old is on amoxicillan and during the nite after about 2 days has terrible diarreah about every 4 to 5 hours.  his stomach seems upset because after having some formula he tends to vomit in the early morning hours once a day.  does he sound allergic?  he has no rash save a diaper rash from the diarreah.