Scared of post baby life

Still in the hospital with my baby, we're being discharged tomorrow but tonight he had his first meltdown. He usually stops crying after a couple seconds but tonight he broke and would not stop. I fed him, tried burping him, tried working his legs so he'd poop (to no success) and he just kept going. I finally called the nurse and she got him nice and calm.. But.. That makes me scared. Tonight made me scared because once I get home, I won't have that help. I'll have my fiance but it's like these nurses have a magic touch. If he won't stop crying, I won't know how to stop it after trying everything. I couldn't control my emotions tonight and started crying too. Which scares me even more. If I can't control my emotions after one day, then I'm really worried my depression will kick back in full force.

Any advice?