25+ years with MS, dealing with severe marital stress and feeling completely isolated. Need an outside anchor.

Hi everyone I’ve been managing my MS journey for 25+ years, but right now, I am looking for connection and outside sanity from others fighting this battle. We came home last week from an exhausting, high-temperature trip (which he planned and which triggered a massive neurological flare-up and headache for me) to find out my husband is being let go from his company. He is completely panicking, working 18 hours a day, and taking his fear out on me through hostility, door slamming, and yelling. I poured my heart into a beautiful text message, setting clear boundaries for my physical health while genuinely offering to be on his team for his job search. He responded by completely ignoring my words, demanding to know "what I want from him," and then yelling at me to leave it alone. I am currently locked in a dark, cold bedroom with my phone on Do Not Disturb just to keep my nervous system from completely short-circuiting. I am sitting here realizing that I have devoted so much time and physical energy trying to save our marriage, and I feel like I have no friends left. I feel completely unloved, invisible, and alone in my own home.I just need to know I’m not crazy. How do you protect your peace and rebuild your independent life when you are physically vulnerable and your partner refuses to hear you? Thank you for being a safe place for me to land tonight.