Take a breath OP. I think you have PND. It's ok, we can help with PND.
I will point out, when you're in this neck deep, you won't see what you're doing, but the fact that your husband hasn't intervened in the impossibly bad idea of you taking your baby to work at 7 weeks full time till 8:30pm is more telling on how bad both a husband and a parent he is!
What you're doing is unsustainable. It pains me that you're actually doing this, pains me because I just wonder how awful it must truly be for you to have taken this step.
Take a breather. And let's get a plan of action together.
Firstly, speak to your doctor and health visitor. Tell them no, you dont want to harm yourself but you're struggling with the lack of support and bonding with your baby. You're spinning plates and no fucker is helping you here.
Secondly, look into childcare options again. Maybe not full time, part time. Tell your husband he can pay to start, its the least he can offer for being so useless! In the time your dd is under someone else's care, don't necessarily go to work, just realign yourself a little. Rest. Eat. Exercise. Just relax your body and mind. Don't rush head first into work. I know it keeps you sane, but it's also risking you just papering over potential mental health issues. Just take it a step at a time. Even if you only do this for a week or so. Just take a break. 4 hours a day maybe. It might be enough to make you look forward to picking your dd up and have cuddles.
Thirdly. You draw up a much better plan between you and your DH. Him leaving a mess is unacceptable. He needs to step up as a father and look after his dd if you're still at work when he's not, and he needs to step up as a husband and make sure he cleaning up for the sake of his wife's mental health.
I cannot stress how important it is you speak to someone about this. You must remember, at only 7 weeks your hormones are still all over the show. It's no wonder you feel this way. I felt suicidal after having my DD. I regret not talking at the time. It was horrible. But im glad I sought help even if it was months and months down the line. The relationship I have with my DD now is brilliant and my god I love that girl like no other. She's 4 and i can't believe how far we have come. And my 'D'h has been an exdh for 3 years now.
You've got this!