Thanks all. Yes, I'm exhausted. But not much can be done about that....

As for the "sleeping through" issue - it's not as though I expect her to sleep through every night. I expect her to wake up, and need me, and I'm happy to go to her.
The thing is, it takes up to 1 HOUR each time she wakes, to resettle her.
Sometimes I can just rock her, sometimes I can just tap her in the cot (depends how awake she is) but most of the time she won't allow that and I HAVE to breastfeed her. For a long time. Then I pick her up and rock her, then when she is 99% asleep she goes in her cot and I tap her for 5-10 minutes (I'm developing a hunchback!)
And a lot of the time, after resettling her, I go back to bed.... and she wakes up 5 minutes later. In that moment it is truly heartbreaking!

I don't rush to her as soon as she cries out, because sometimes, she obviously isn't truly "awake", and will resettle herself. But most of the time I have to go in. Sometimes she lets my husband rock her, and sometimes she gets too upset, and I step in before too much damage is done.

I know in years to come I probably won't remember any of this.... but it's so hard NOW. And I know lots of other mums find it hard, but most of them end up having more children, so obviously they don't find it that bad in the end
But I won't be having anymore. It is too much for me. Good thing I didn't know all this beforehand, or I would not have had my beautiful daughter. I love her so much and I know it will be worth it.
It's just the hardest thing I have had to do, and I find myself "counting down" the months until she turns 2, and 3...