Chloe is on breastmilk and soy formula (since 2 month old), she never has problem before, just spit up a bit now and then. Since last week, she start spit up more (not a lot) so I’m tempting to try the enfamil RS yesterday, just one try. 2 hours after that Chloe has 2 episode of projectile vomit (never happened before). I think she has milk/lactose intolerant (both my husband and me are). How long the milk got out of her system? She’s been coughing too. Thank you!