:( :(
Gina, things sound tough for you.
I think one thing that will help is to take a look at the bigger picture. At the moment, you are reeling from thinking everything's now going well, to everything's now terrible.
Changes in feeding and sleeping and so on are rarely dramatic and instant with any baby. Instead, they change more gradually with hiccups and step-backs along the way....with the overall picture changing over days and weeks, not hours.
At the weekend you said you are taking each day as it comes as each day is so different....that's the way to think about it.
Basically, your dd is healthy and growing ok. She is not ill. She has a typical young baby's sleeping pattern which is not very predictable. She is sometimes fussy and difficult to soothe. Sometimes, she seems to want to feed but when you offer she fights....that's confusing and upsetting, but from what you have said over the past week, this is happening a bit less. Good :)
It might help to pinpoint what it is that worries you about her. Not her health - that's ok, I think, yes? Or her growth? Her feeding seems improved and less worrisome now, is that the case?
Is it that you're worried about not always knowing how to ensure she is happy and comfortable? And you get distressed when she and you can't seem to understand each other?
If you can figure out what it is that's making you worried, you can then work on fixing it.