Hi ashley,
By seeing your history it appears that yoy are suffering from
Malabsorption syndrome which may be celiac/topical sprue, pernecious anaemia, glutein
enteropathy or
irritable bowel syndrome, so you need to be evaluated in detail to rule out the above causes just doing investigation for
celiac sprue may not able to diagnose actual condition, you may also require endoscopic biopsy at different sites, consult gasteroenterologist for further evaluation and suggest my advises also.
Take care