food allergies and GI issues

so Alexa has some food allergies that have poped up in the last 2 weeks
last week was ranch dressing and this week its prunes.
shes also had ongoing constipation which we are seeing a GI specialist for. right now i have to get her to take myralax. its a battle, but she drank 1oz of it yesterday, shes sopose to be getting 4oz for 4 days then i need to bump it up to 6oz. we were in the ER friday and they did an x-ray and her colon is FULL of stool.
so yah thats whats going on with her.
oh they are also testing her for celiac's we are awaiting the results, we will know next week.
if that comes back that shes ok, im going to have them test her for Chrone's and have a full food allergy work up done.