I keep throwing up after I eat?

Yesterday at lunch, I ate spaghetti and did not eat anything afterwards beacuse I felt full. At around 9 pm I got small stomach pains, but just thought it was indigestion and took pepto bismol. At around 12am I threw up most of the spaghetti I ate and a fever and chills followed shortly after. The spaghetti was not digested and many of the vegetables that were still visible. Today at morning, I felt a little bit better, but still had a fever and drank a morning shake I drink everyday. I went to school and threw it all up. I did not eat anything today, but I feel full and am not hungry. However, I felt that I should eat something so I am eating tofu soup, and now I feel like I'm going to throw up again. It has nothing to do with pregnancy since I am a guy and am 16 years old. I threw up all the spaghetti that I think gave me food poisoning so shouldn't I not be vomiting? help plee. vomiting does not feel good lol