Help!

Allison • Baby number 1 on the way ♥️
So I found out I have to get my gallbladder removed after the baby is boring I'm almost 5 months don't look pregnant at all I don't have an appetite I'm not eating well it's hard as it is now to eat I'm scared for my baby's health my doctors jus say stay away from fatty foods n fried n all junk food but it's hard I don't know what to eat or what diet to go on I'm not taking prenatals because they make me sick I vomit a lot and I'm scared as well any suggestions ?