Yikes I want to try some milk kefir making my own this is frightening

I made an account just to reply. First time I had kefir I was reading how unpasturized goats milk is the best way to go in terms of probiotics with kefir. So I ordered online and received the kefir and went on to drink a small carton and within the hour I was peeing blood and I got my first UTI with acute renal failure. It wasn't the kefir I'm sure, it was the milk.

Go and make your own water kefir and you won't be sorry, I love it and have had no problems.

I have been making my own milk kefir for sometime as well as being grain free and have found wonderful health benefits. Like others i thought i would add water kefir to reduce the amount of dairy - soon after drinking my first dose (4 - 6 ozs) of water kefir (which i loved) i developed a UTI. Dr. confirmed small amount of blood in pee sample. I don't want to give up on the water kefir but right now i think I'll stick to milk kefir! I read that cross contamination can affect the balance of both types of kefirs.