Op, a few points.
Your h's reaction and behaviour is extreme, unreasonable, simple minded, dumb (quite frankly), unrealistic, ignorant, prejudiced, intolerant and immature.
(Oh and I don't believe no one's ever had MH issue in his family. Bollocks. They're incredibly common. They would just hide it, by the looks of it).
It reminds me of the opinions/understanding on mental health issues of an absolute dumb ass manchild of an ex I was with. He was in his 40s but was stupid, simple minded, and prejudiced.
(He'd also boast about not suffering from the "weakness" of depression etc. while actually being depressive. Rather ironic).
Your husband sounds very similar.
A year is a very short time to be getting pregnant and marrying someone within.
Why the accelerated programme?
You're still getting to know someone in that tine, and this is a perfect example. He is majorly dumb, prejudiced, ignorant, narrow minded and seriously lacking empathy or kindness. You've only found out and you're pregnant from not using contraception and have gotten married.
I feel very concerned for you if you stay with him ...and not much less concerned if you don't stay with him. Because he'll still be a shit co-parent and ex. Who wants someone raising their child ...with all the challenges (including behaviour and MH challenges that you have with kids and teenagers) with someone who's like him?
Are you far along, are you opposed to a termination?
Whether you are or aren't, he sounds like a shit partner.
As someone said, what on earth would happen if you got antenatal depression or post partum depression or any other illness in the future.
What if your child is on the spectrum (as many are) or has one of the the many many habits that kids have - like stereotypies, thumb sucking, bed wetting, difficulty potty training, eating quirks, anxiety etc. etc. Or MH difficulties when they are a teenager, as many do.
Decent partners and parents need to be tolerant, kind, understanding, supportive and constructive. He's showing none of that, whatsoever.