Possible ptsd or anxiety?

I was trying to figure out what I was getting paid at one of my previous jobs and was looking through old messages to see if I’d possibly told either my parents or husband (then boyfriend) about it through text and stumbled upon old messages between my husband and I. The way he used to speak to me, accuse me of cheating, borderline cuss me out. He did a complete 180 once I got pregnant. And he’s absolutely wonderful and an amazing father. We almost never argue and when we do, we’re always able to find a solution. But looking back at those memories, I feel like my heart dropped to my stomach. And I feel like crying, my heart is racing and for whatever reason I’m anxious texting him rn (putting my daughter to sleep while he’s in our room) scared that he’ll get upset like he used to if I take too long to respond. Which he hasn’t done since 2019, but those messages brought all those feelings back. Idk why I ever allowed that. Almost every night was a fight, him accusing me of being with someone else, all while I was at work closing. It hurts that he ever treated me that way. I’m glad he’s changed and come a long way. I should probably delete the messages, shouldn’t I?