Whey protein with Creatine

[AdamGH]

I started taking this Whey Protein powder supplement the other day. Thing about it is it has 18g of a "Super recovery blend" with every 2 scoops. Which includes Creatine Monohydrate among other supplements. I have noticed my weight yo-yo'ing though since I started taking it. Anywhere from 6-8lbs. Is this because of the Creatine being introduced into my diet or something else possibly that I am eating? It has to be water gain. So its either my salt intake or the creatine. So basically in the morning Ill weigh anywhere from 211-213. By the end of the night, I am 218-219. Just wondering whats is up..

[AdamGH]

Here is the info off the back of the container.