The doc I had on Thur is having me do this stool test for this candidia. Could you get a test ordered or ask one of your docs about it?Random ? would that diet help for your pain or digestion issue? On the front of weight loss be careful because being underweight causes a lot of issues and it makes it harder for your body to fight. I am not sure if you are but even if you are underfed or undernurished. As for test they will know more but looking over my stuff have you been tested for thyroid,iron,white blood,liver. Also I am assuming you have been tested for many auto immune isues since you have the ivig? Hang in there.