Shae's got a lot to learn - things are only going to get better.
Try taking her for a walk outside whenever you can - you'll feel a bit better for getting out, the screaming will be less than it is inside a house, and the movement may even help her sleep!
You may find that she is happier with her head elevated a bit - either by putting a wedge under her mattress or using a sling (though that can be a bit tricky when they are tiny and floppy and feel so fragile).
Is she happier in the bath? If so then move bathtime to whenever she is grumpiest!
And above all - hang in there. Ask for whatever help people can give. And look after you - make sure you eat and get a bit of exercise and as much sleep as you can.
hugs
Kate