I hate to say this, but I feel like I don't deserve to have children or be happy.
Why don't you feel like you deserve those things?
Being a parent is a new chapter in your life and I'm not sure I'm good enough for it.
We all have doubts about ourselves sometimes, but if you're feeling like you don't deserve happiness then you may need to seek counseling. If you leave negative feelings like that unchecked, then you're likely to deny yourself the happiness you deserve.
I care about my happiness. I just want to make sure I'm ready for it.
Your not unusual. A lot of people feel unequipped for parenthood. You might want to take a parenting class with your husband; you'll discover everyone else feels much the same way.