Heath Question?

I didn't exactly know where to post this, so I posted it here. Sorry if I am bothering you guys, but I was worried.

Okay, so I woke up one araw at about two in the morning, not feeling well at all. My stomach hurt really bad, like it was completely empty. I was also shaking so much my teeth were chattering, but I just thought I was cold. I went to get up and get a glass of water, but fell back on the kama from being nauseous. I stayed there untill everyone else woke up, and let my mom know I was sick. As I went to lie back down, I was nauseous again, so I couldn't sleep. It only took an oras for that to go away, and then I felt completely different. I could ilipat without feeling sick, but I didn't even feel like I was moving. I guess I was light headed? I was shaking worse than before, but I didn't mind. I felt no pain or sickness at all, exept an empty feeling. I tried to eat a piece of bread, but was completely repulsed sa pamamagitan ng the thought of food. I didn't eat anything for three days after that, but finally caved in and ate a taco without throwing it up. I want to know what the hell that light and shakey feeling was, and what caused it. Even though this sounds odd, I actually liked it a little. Would it be harmful to feel like this all the time? I really dont know how, but I just felt better. How do I treat this if it ever happens again, and how dangerous would it be if I tried to make myself feel like this again? What is it exactly?...