Are mushrooms ok?
I don't have personal experience, but I can give you the technical view
Mushrooms cooked well and chewed well are relatively easy to digest and are not very fibrous. Eat your protein first - and if you have room (and your doc has given you the ok for solid foods) give a few a try. Tolerances vary from person to person, so you may have no problem at all.
Your mother is right when it comes to raw mushrooms, but cooked are much easier to digest.
Danielle Halewijn RD
eNutritioncare.com