Went into the hospital

Jamie • Happily married! 💍4-2-17💍
So I went into the hospital because my mom thought I might be leaking fluid. This is my first kid so I have no idea what's suppose to happen or when I should go into the hospital.
So long story short I was dehydrated and I needed an IV. They blew the vein in my hand so they had to go to my wrist for the IV. I cried because it hurt and I'm not good with needles.
The doctors aren't concerned for me having him this week so they sent me home. 
Told me if I have contractions that last longer and the pain increases to call them.
I figured out from me crying from the IV that having him is going to suck and I'm going to cry and be in so much pain. I'm even more scared than when I was before. 
Any help?