I ate Kraft macaroni and cheese as well as about 5oz of cranberry juice prior to doing some yard work. About 1 hour later my stomach started hurting - similar to a dull pain with slight nausea. I vomited 20 minutes later, a dark brown liquid, however I did not eat anything of that color during the day. Any ideas why the color was brown? Or if these symptoms could be related to drinking a mixture of beer and tequila the previous day? Thank you for your help!