5 month old son and im ttc

Sam
So I had my son back in October 2015. I love my son with all my heart and after me and my hubby found out my BC was defective we both wanted anothsr baby. All of out family is saying its too soon to want another baby. That I need to get another birth control. But we don't want to. We Want to have another baby already. Do you guys think its too soon to want another baby?