nervous and cramping

Savannah • Married 💍 27 and our little one is due January 29th, 2018!!
So I literally found out yesterday that I'm pregnant (around 4 weeks) and I've been crampy today. My doctor wants me off my feet for a week, which is hard since I'm a hairstylist. But I'm freaking out now :( is light cramping normal? I haven't had any bleeding.