Do you ever second guess yourself?

Recently my fiancé and I have been TTC & sometimes when we fight I just sit there and think “do I really want to bring a baby into this?” My parents argued & were physically abusive to eachother all the time when I was younger. My fiancé and I aren’t like that but I’m one that doesn’t like conflict but I also feel the need to be in control (which causes conflict) I know I want a baby, he knows he wants a baby, we know we’re both never going to be exactly ready but were ready at the same time. I don’t know, we just had a small little argument last night and it kinda made me think twice about it, I know that later on in the day I won’t feel like this but as of right now I want to see how everyone else feels