Am I showing symptoms of Appendicitis?

I've looked up symptoms, and they sort of match, but they're pretty vague. Perhaps someone who's had it or knows about it can give me a better answer. Four days ago, I woke up and found that when ever I stepped on my right foot I felt a pain in the region of ones appendix. It got pretty bad through out the day and also occurred when I was standing and simply placed weight on my right foot for some time. At lunch (I'm 15, if that matters) some friends dragged me to the school nurse because I was limping so much. She asked me a bunch of questions and them had me lie down and pressed my stomach on the lower right, asking if the pain remained in that area once she'd removed her fingers, because that was a tell tale sign. It didn't, so she let me go, but before I left, she said "I can't tell what you have exactly, but if you experience dizziness or a fever, you should go to the emergency room" The next day, the pain was less and I could walk much better. Around 12:30 the next day, I started feeling warm. All my friends told me I had a fever, but the pain was subsiding, so I decided to ignore it. It lasted about three hours (I think, but it could have been longer) and I'm pretty sure it was over 99 degrees (I have a friend who's naturally always about 99 and everyone said I felt warmer). Saturday I felt fine all day, but this morning I experimentally pressed my appendix-ish area and the pain stayed there for a really long time (over four minutes). It sounds like I have it, but I fell fine and I don't want to create imaginary problems. Are there any big signs to indicate that I don't have it?