It's going to take some time to adjust, so don't be too worried. You're making some major changes, and your body won't always be happy about them right away. Give it some time. Yes, that much cream in one sitting is a bit over the top, but cut yourself some slack and just figured it was a lesson learned.
Your diet actually looks pretty good. For myself, I have found some of the hangups to be in the details. So, for example, I would have an amazing, nutritious dinner, then put a little barbecue sauce on the side. Yeah, that sauce had soy, HFCS and gluten. Crap. Make sure you're reading labels, and try to avoid food with labels in the first place.