Unless you signed a deed of trust, which you didn’t, the email he forced you to send is worth nothing.
As his wife you will be able to make a claim on the house, however the length of marriage is important. A short term marriage would give you less of a claim.
If he’s a solicitor he’s fucking stupid not to have drawn up a deed and gone joint tenants in common. ( tenants in common can be disregarded after a medium term marriage, but the deed of trust would have protected him)
Honestly I’d leave him now, before the baby is born. He may reassess being a dick, and step up to the plate but I doubt it.
Newborns are exhausting, mostly as you don’t get to sleep and hAve a body that’s knackered. The idea of working is crazy, especially If you don’t really need the money.
My first baby left me very ill, it was weeks before I could even walk....work.....not bloody likely. My second, c section, that’s major surgery!
My Ex DH was awful when I was pregnant, major red flags. I ignored it, battled on. However I never got over his lack of love and compassion.