I really feel for you OP but in my experience this is completely normal - like everything with little ones, it is a phase and it will pass. I found that thinks got much better at 8 weeks. Sleep when you can by taking in turns with OH and he kind to yourself. Sending you a hug
Our six week old was sleeping alright until a week ago, when she started refusing to sleep in her cot. We don't know whether it's colic, wind or reflux (silent?) but she squirms and cries when we lie her down, and groans and shouts until we pick her up. She's formula fed with Aptamil but we haven't changed the formula (the only change is she had been having some expressed milk before, but not much as I was really struggling). It's at the point now where we're not getting any sleep as she'll only sleep on us. Can anyone suggest anything? The GP seems uninterested as she's putting on weight fine. Is it just a phase? Has anyone experienced this? Thanks.