Wow, that is not good. It is safe to say that most or all of your health issues are from that incident. Do you know if the others from your school also have health issues (you can verify that if they are on Facebook and there is a group of them)? Then you can attribute it fully to the radiation.
Well, in my case, the only bad things I have ever had are a lot of instant coffee, propecia, and some stress/sadness. I stopped all refined sugars years ago, and my meat consumption was twice a month, so a lot less than most people....