Sorry I'm desperate, not getting any sleep past 3amost nights! She feeds I burp her, I then hold her upright after the feed and then when I put her back down the straining and groaning begins- it's awful to hear, she's clearly uncomfortable but still asleep, and I can't sleep. I'm giving her gripe water, bicycling her legs, giving her tummy which is very hard a massage - tiny little bits of wind pass and she carries on groaning. Foes anyone have any ideas or if it's just a developmental phase how long does it last?! Tia