When your married and still had feelings for your ex 😔

So I’ve been married since May and my husband and my family want us to start trying to have a baby but I still have feelings for my ex who I was pregnant by and had an abortion because of how much my family hated that I was pregnant by him and everyday I regret it 😭 i don’t know how to tell my husband I would love to have a child but not with him😔 he’s an amazing man and a wonderful dad to my daughter... I can’t find it in myself on how to tell him how I feel about it since I regret the decision I made with my ex and acted upon my families input and didn’t think about how it would affect me in the future...Advice please ☹️