💐😢. It must be an awful & scary way to feel. I can't even imagine it, I read your title and wanted to say 'Please give him/her to me', I don't understand how you feel at all, but I do feel awful for you feeling like that.
Your DH & your midwife were both out of line, convincing you to keep a baby you never planned to have, never thought you could have & didn't want.
However, it's done now and all you can do is go forward, you can't go back.
Your husband - he's ignoring you because he knows it's too late for a termination?! There's no going back from that, I'd say your relationship is over. Well, it would be if I was you.
The baby - it's not unusual to feel a milder version of this around 37 weeks, when the total realisation hits home that you're about to be responsible for another, very tiny, human being.
Do you have a friend or relative that you can talk to, someone you can trust to be there for you? Please try to find someone who is totally on your side.
When the baby comes your hormones will get yet another big change up, you might feel the same or you might feel very different. If itbwere me I'd go through the motions for as long as possible...see if you come to feel differently about your baby. Not everyone feels an instant rush if love, not even when the baby is longed for, so it might take some time to bond.
Don't think 'forever' think 'for now' - you can always give 'H' sole care if you really want to.
My heart goes out to you, take care 💐