We just can't figure out what is bothering ds2. In the last month (he's 4mo) he often screams when laid down, and is obviously much happier when held upright. He also struggles to feed, pulling on and off the boob (ouch). He had a cold and I thought it might be earache, but the GP has had a look and said his ears are fine. In the last few days almost every time he burps he grimaces or even wails, then follows through with a very large possett. Not that I'm sure what the difference is between a possett and a vomit, but I assume that a vomit includes a retch, which ds2 doesn't seem to do. Otherwise I'd call the large possett a small vomit. Sometimes the stuff jumps over his bib or his shoulder - not exactly projectile, but neither does it just dribble out.
Is this mild reflux? I've read that you don't always get utter misery and projectile vomitting with reflux.