What can be the reason for loose, watery, and greenish stools?

Hi doctor,

Three days back, I ate meat ramen. Nothing was fishy at that moment, but as two days passed, I felt a mild cramping pain in my stomach today. I then had a zero sugar soft drink thinking the gas in it would resolve my stomach pain as I thought I had some bloating. But then the pain did not resolve, and after two hours, I passed loose, watery, greenish stools. I would have passed at least three times today, and I feel I still would pass. What has happened to me? I suspect it to be some food poison. Because after that meat noodle, I had a burrito the next day, some pasta, and pizza. Everything had some meat in them, so I was confused about which food was the cause. I also had alcohol all three nights. What should I do now? I feel extremely weak and have been drinking only water. Whatever I eat, I throw up. I already have vomited twice today. Please help.