Financially scared, whole heartedly excited

Amy • First time Michigan mommy to a beautiful daughter, Leila Sky. 26 years young. ❤️🍉🌸🐰🍵🍣🌟🎀
This is embarrassing. 
Although I am ecstatic, I am terrified. It sort of all hit me at once. Michigan gives me 6 weeks at 60% pay, then I have to go back to work. I'm scared I will be tempted to leave my job. I want as much time with my little girl as possible. I'm sure we all dream of being stay at home moms, but in modern times, that just doesn't seem possible. I make more than my partner does. :-/ 
Am I alone in this overwhelming fear?  
Please help with any advice or similar fears. <3