New Formula not so good

Parker was at Grandma Roberts all weekend because friday I had a bacholrette party to go to and sat I had a horrible hangover and she said he spit up the formula more than the enfamil A.R so now I have to call the doctor tomorrow and find out whats going to happen next! This is so frustrating, I should of just left things alone. When we went to pick him up today he projectile vomited on his daddy:( I really hope they figure something out, we might just end up going back to the other formula because this doesnt seem to be working! So hopefully sometime this week we will have some answers!!!!