Newborn MUST HAVES?

I'm a first time mommy and I'm due in August.
I would love hearing from all the mommys here what kind of things I must have prepared for our baby girl.
Such as medication and even things for my own health or body.
Pretty much the small things that are actually the most important things for the baby.
Also give me recommendations.
PS. I'm shopping for the babies things this upcoming Saturday and I really don't want to leave anything out!