Just wondering if anyone else has had this problem................ I have recently switched to Optimum 100% Whey Protein.

The problem is in the two days since I have been using(3 shakes a day) I have been pissing out my ass .

Any thoughts??? I haven't eaten anything different or anything that would have upset my stomach. That leaves the protein.

Also I mix it with water(spring water) instead of skim milk . (was afraid the milk might upset my stomach lol!)

Any help would be greatly appreciated .