I'm sad when he gets frustrated with me

I have no idea what I've done. I'm the one with ADHD. My spouse gets frustrated with me and condescending with a tone. I can't do much of anything right from what I can tell. It makes me sad and teary. In the past, when I've tried to set boundaries and/or talk about it, he gets upset and asks me for examples. And he brushes them off as me being overly sensitive. So he's dismissive. He hurts my feelings. And he's certain it's me, not him. I feel like I'm being punished for something and I don't know what for. I'm out of ideas and options. So I just shut down. Which makes it worse.