selfish jerk

Yes I'm talking about myself. I can't stop myself. I want another baby. I have two now. I have and 11 year old son and a 5 year old girl and I'm 28....I just want one more. No one was happy when I was pregnant with my first (teen mom) and his dad and I were young and it was rough so I went through it alone...we made it and got married and had our daughter a few years later and still no one was happy for us. They were all worried we would not make it. No idea why because we have been happy together for 13 years now. Our second child I had to talk I him into...so much that we would fight. now I want one more baby and he's a hard no. I don't want to have to talk him into it.. I want him to want me to have his baby. I want it so bad that sometimes I feel like I will resent him and maybe I should leave him before it gets to that point. I love him and I don't know what to do or how to stop wanting this. Advice please...I don't want to ruin our marriage.