Maybe- do you have any other symptoms? Do you have any digestive issues? Do you break out noticeably the day after you consume dairy products? Maybe its more like a brain freeze kind of thing if your yogurt is really cold. Personally, I think it could be an allergic reaction because sometimes when I eat certain foods my face starts to itch and I start to (almost within hours) feel small under the skin cysts coming up on my face. Its unpleasant Coffee seems to do that to me as well as soy