Can you have appendicitis even if you dont feel sick , you just have stomach pains? PLEASE read details!?

So 3 days ago my father and i went to go eat at a Hamburger restraunt. about 15 Minutes after i ate i began to feel sick at my stomach. The next day I felt sick with Some stomach pains, and threw up 4 times pretty violently, i didnt throw up much material, it mostly just heaving, which hurt. and the following day, I felt about the same, except I didnt throw up. Yesterday, I started worrying that it may be appendicitis, i had the pain in the right area being the main reason. I also had a mild fever and a loss of appetite. Today I felt better, It was much easier to walk and move around, and i was able to eat some things. So here are my questions - First off If I did have appendicitis, would I begin to feel better like i do, or just continually get worse? Second, My Pains in my stomach weren't very severe They hurt but not to a horrible extent - How bad are appendicitis Pains? And Third, My Main Question, Could the pain Just be from Throwing up, not appendicitis? I dont feel sick at all?