I was on a very long flight and I did consume meals on the plane. I am not sure if I had food poisoning from something that I ate earlier but I did vomit several times on the plane. I could feel the pain in my upper left abdominal area and I could not really stand without the feeling to vomit. At one of the refeuling stops we made, I vomitted again, to the point where it was coming out of my nostrils. The color was a bright yellow, and I was really concerned since I had not eaten anything that color to my knowledge. It has been two days since the occurance and I am still feeling some pain through simple movements or coughing. I have been drinking a lot of water trying to flush out my system. Any suggestions?