Last Pregnancy

Have any of you decided that there are no more babies in your future? I've decided that this 3rd one is my last one and I'm getting a tubal ligation during my c-section. Did any of you freak out because this is it...like for real, this is it. No more babies. Did any of you change your mind? Are you at peace with no more babies. I'm worried that I will regret my decision but I really dont want anymore babies, I'm almost 37 and my body really can't take another pregnancy. I just don't know how to think right now.