Belly Bra

Jesica
I'm 12w+5d with my 3rd child (5th pregnancy).  My doc says I have an umbilical hernia. I also have internal varicose veins, and had external varicose veins in my legs during my pregnancy with my last child. 
My doc suggested a Belly Bra. Thoughts? Does it work? Are there better products out there?
Thanks!