Just wanted to say that I understand what you're going through and I hope you have now sought help for yourself and your baby because it sounds to me like you might have Post Natal depression (PND) which, believe me can last for months if you don't get treatment. I had it after my second baby who was also a screamer; you couldn't leave her to cry because her lips would go blue she was crying so hard she wasn't getting enough oxygen. Frightening. My DH would take her out for walks in the middle of the night because the only time she'd be quiet was when she was moving; she'd start crying again the moment you stopped rocking her or pushing her in the pram. there's no shame in asking for help as the depression can also be fuelled by hormonal changes...and of course the sheer exhaustion of not getting a good night's sleep. For what its worth I'm sending a virtual hug and thinking of you. This phase will pass;it's just really hard to see ahead when you're going through it.