welcome to the forum Pam
Do you have an actual gluten allery? if you don't then you may wish to consider not trying to do gluten free as you are shifting to a whole food plant based diet. Many of the starches that make this lifestyle enjoyable do have some gluten and it adds an extra layer of stress to try to avoid gluten too. Have you lightened up on oils as well?
I too had dabbled with plant-based a few times over the years before going there completely and it was hearing Dr McDougall on a talk show that allowed me to see how simple it could and how enjoyable. Two weeks away from 3 years so very thankful.
If you google "dr mcdougall endometriosis" you will find some interesting results including this one:
Diet Cured My Endometriosis and Helped Me Have My Son Because of the McDougall Program I was able to rid my body of a painful chronic female condition,
www.drmcdougall.com
And if you google "whole food plant based endometriosis" you will find more amazing information.
I wish you all the best, endo can be so debilitating and I am so thankful never to have experienced it.
Sending healing thoughts, Emma JC