So, I thought that BF babies were not supposed to get constipated, but my DS (5 months next week) seems to swing back and forth between not pooping for a day or two and then having multiple blowout poops in a day. The doctor finally put him on Zantac for reflux at his 4 month appointment and he has seemed like a changed baby since then - while he still spits up a lot, he no longer seems to be in pain. However, since that time, his pooping has also changed, going from multiple times every single day to the situation I described above. I know that at some point babies stop pooping so frequently (can't remember when it happened with my first DS), so it could just be coincidence, but I'm wondering if it is related to the Zantac. I think in the scheme of things, him appearing to be uncomfortable when he is full of poop is probably preferable to being uncomfortable after every feed due to reflux, but I wish we could get to a point where he wasn't uncomfortable at all. Any thoughts or advice?