I'm so sorry you are going through this OP I can very much relate ( and was posting on here a couple of months with very similar questions ...)
It is SO hard getting your head around the chilling/ dead eyes/ contempt looks ....I'm genuinely not sure how you get back to a space of safety and trust from that. ..
My H has been very similar for the past year ...does have high blood pressure ( but hasn't bothered going to GP and a lot of the reason it's high is blamed on/ aimed at me)
I don't have answers ....I wish I did .... I got to the point of seriously planning leaving .... I've not quite worked up the courage yet but at the moment that is feeling like the only option still ...
We barely communicate ...certainly not about anything real ....I either get a clipped " I'm fine" or minimal conversation .... This morning I came back after taking DD and the dog out to walk/ park , didn't even get a hello when we came back in ( I thought he was still asleep) .... No help with anything whilst I wrangle toddler and puppy, put the washing on , then he's literally starting at his phone playing games, then fell asleep on Sofa for 20 mins ( at 11am ...I've been up with the littles since 6am!)
One piece if advice I wish I'd taken when this all first started was not to let it drag on too long or it'll impact you in ways you may not anticipate ...
I feel like even compared to a few months ago I'm a much more lost version of myself ....I feel I'm going through the motions on autopilot and a mix of numb and then absolute fury that he is treating me ( and our family) this way.
I'm not sure what will or can happen in your situation , but please, please don't stay longer than you need to ...🤗