Congrats on the birth of your little girl, and welcome to this wonderful community! Reflux is my vote too, speaking from experience, I'd head on over to the reflux board and see if that fits. If so, a visit to your GP is in order. My LO suffered from silent reflux right from the beginning, and I caught it because I could hear the spluttering on the baby monitor minutes after putting her down (followed by painful crying). Thankfully, ranitidine has worked wonders for her and she continues to do well. Good luck to you and your LO!