I haven't tried them since I don't have that membership, but I myself have had to cut out all egg's and egg products, otherwise I have major digestive issues. It's only been a recent thing within the last 6 months, so I cut out all egg's and my system is much happier.... and so are the people around me...lol
You probably have over done it with that brand of egg whites, I know egg's are awesome, but maybe cut them out for a bit and see how your system responds when you introduce them back in.