My daughter is 3 months old and constantly spits up clear liquid. I'm not so sure what it is any more because my first one had acid reflux so I assumed my youngest did too. She's been on Zantec for a month now and she doesn't spit up any more milky substance but still constantly spits up clear liquid. She doesn't even really spit it up half of the time it just runs out but when it does that its a lot. There are times when she gets so choked on it she can't breath for what feels like forever but I'm thinking probably around 1 minute. I feel like either her acid reflux is worse than her pediatrician and I had thought or something else is wrong but I really think something should be done. :(