Am I messed up for leaving?

So partner and I have a 7 month old and I found out I was pregnant. Told him today and his reaction wasn’t what I hoped. Basically told me he’s going to take me to get an abortion Monday because now is not the time to have another child. He said that he couldn’t be believe it and that he wasn’t going to allow me to do this to him and his stepson ( from his previous relationship that he’s 5 years old now) he said he only wants to focus on his two children. I explained him that he could’ve easily been more cautious or used proper protection if he didn’t want another child. It takes two to have children. He basically gave me a choice. Either have the abortion or he’ll leave me. So I grabbed my 7 month old and I grabbed a few things and I told him I was leaving, I told him children are a blessing and I’m not going to take away a life and not give my child a chance only because of selfishness. I love this man and I feel heartbroken right now but I want to stick to my decision, I don’t want to be forced to do something I don’t believe and know that it’s going to effect me emotionally in the future. Please send your prayers to me