Not sure what to do

Husband and I talked about having my tubes tied after our baby is born in March. After more thought I told him I'm not sure if I want to do that, what if we decide for another baby. He said he's completely against more kids but I just feel like we are a bit young still. I'm 25 and he's 23. I just feel like we could talk about it. I don't want to leave him and he doesn't want to leave me but I'm just not sure how we just decide yes or no really.