Third Child Slightly Terrified

I will be getting a c-section on the 24th and although I'm thrilled to be over this pregnancy I'm also kind of freaking out! I never planned on having three children and I was married when I had my first two. My little ones are 5 and 3. It's been so different and stressful going through this pregnancy on my own.  So as thrilled as I am to have a baby again I'm also scared, I feel unprepared. Any moms out there with three or more little ones have any advice? No rude comments please.