What's wrong with me?? I'm scared about my health?

It sounds as though you are dehydrated. Soda is a diuretic, which means it pulls water out of your body. Tea also does this. Also, the ramen noodles with seasoning salt will cause you to retain fluid, but still be dehydrated. You need to drink WATER. When you are dehydrated you blood pressure typically drops which in turn will make you dizzy. Hope this nformation helps. Good luck to you.