I already know IABU but any advice would be really appreciated
Backstory- I had two proper relationships before I met my husband. First lasted for around 7 years from when I was a teenager into early twenties. It was turbulent and there was a lot of wrong on both sides but the relationship was mostly him cheating on me, me taking him back and repeat until we eventually ended. Next relationship was about a year and I ended up pregnant with my daughter. He was emotionally abusive so once I fell pregnant he would tell me I was a loser, stupid, pathetic etc every day until I eventually left before my daughters first birthday. I stayed single for 6 years after that and established a career and build a life for my DD and I. Fast forward now and I have everything I've ever wanted in life. My husband is perfect and I don't say that lightly - he literally has every quality I had written down on my 'dream man' list when I was single. He is so kind, thoughtful and would do anything for me. We have a great relationship 99 percent of the time but the problem I have is that if we have any kind of disagreement I totally cut him off and don't want to speak to him for days. For example, we could argue over something mundane like him forgetting to take out the bin and he would snap back at me and instead of just accepting it's been a disagreement and him apologising as he always does, something in me just can't accept it, despite knowing it's not that big a deal. I then don't speak to him for days. After a few days I eventually snap out of it and normal life resumes and I'm full of guilty over my behaviour. I don't know why I do it, is like a total anger takes over and I just want to break up and never see him again, over things that are so stupid. This is killing him, he gets so hurt by it and I know it's hurting him but I still do it. It's like I'm making him miserable when he just doesn't deserve it and only wants to make me happy. I don't really know how to fix this but it's worrying me that it's going to slowly break him and I'll ruin the relationship