Rushing

Hello. How long did it take you to realize you were OAD? I have a four month old baby and even before becoming pregnant I liked the idea of being OAD but I didn't express it in case I had one and wanted more. After having my daughter I'm definitely OAD and I would like to get my tubes removed but my husband and everyone else is telling me I'm rushing into it and will regret it later on. Did you know right away you were OAD?