I think my friend is upset with me

So I told my friend that I reached out to my daughter's step mom and told her congratulations on her baby. Long story short we didn't get along before, we hated each other. I believe I was just upset that I wanted a family with my ex and he didn't want the same and even before he married her I knew it was all over and I had no chance with him. I want to put all differences aside and just get along, I figure she's up to it. We don't have to be friends. My friend brought up her and I told her that I wished her(step mom) congratulations on her pregnancy she said she wouldn't have done it. I told her I have nothing against the step mom and all she replied was ok. I just don't want to be bitter anymore because it's draining. I didn't keep my baby from seeing him but I would get upset whenever he would take her and it makes no sense to me. She says that I'll regret what I've done later on.