Conflicted

I signed papers last week for tubal sterilization. I'm currently pregnant with my second daughter after 10 years. I'm 34 years old. I seriously don't want anymore children. But I can tell my husband really wants to have a boy after having a daughter from a previous relationship. Lots of people want us to go for 1 more after this one. (Not right away) I feel like I'm being selfish. I don't know what to do.😔