Food Poisoning ???

I wasn't feeling well this few days... But still I have to do my work.. still I have my students coming for their classes.. I have this weird feelings in my stomach, and keep vomiting for no reason.. my guess is that I might got food poisoning..It started after I went to this weekly night market here.. and I brought burger and keropok lekor... but i use to buy it from them and nothing happen... I was thinking that the milk that I use for my breakfast and dinner might be expired.. well, No Too.. the due is still few days away.. Then, the kenduri cukur rambut that I attend too.. and still no cause those who went there is very very healthy... so my guess would be the night market food.. i hate vomiting.. does anyone here like it???