Re: I messed up and made a mistake after my 30 day fast.

There is nothing in your post that indicates kidney damage. I wouldn't worry much it was probably the milk, your digestive system can be delicate for quite a while after fasting. When adding in whole cooked foods, milk and meat would be the last foods to be added as they require the most digestive capacity, you should probably wait at least a couple weeks before adding these back in.