You're not wasting anyone's time. Every single person here has the option of getting up and doing the ironing instead, but we'd all much rather lull you through your misery.
Now then.
Firstly, your husband - he needs to take the baby OUT. he needs to take her OUT for that hour that you need to have a bath and do your hair. You won't relax if you're waiting for her to squeak, so he needs to take her away and let you have the whole damn flat to yourself for an hour. She will not starve in an hour. feed her, hand her over, and say to him "Go for a walk and do not come back until X o clock unless you truly think she needs a doctor."
I remember needing that very much - somoene to take the baby AWAY for a little while.
Secondly - try a different antidepressent. they don't all cause insomnia. Side effects go away after 3 weeks max - what is better, feeling shit for 3 weeks or feeling shit forever more because you won't take the tablets you clinically need?
Thirdly - have a think about whether or not you would be happier if your daughter could be fed without your breasts having to be involved. She has had a good four months and a virgin gut is not worth much if your mother is miserable.
Fourthly - it gets better, it gets so so much better, so much easier, so much nicer. And it will do soon.