Open Question: i got my period yesterday and ever since then ive been feeling horrible! unusual symptoms..?

My symptoms are horrible horrible cramps, heavy menstruation, I feel very weak and tired, I see everything a vbit slurred and slow, almost as if I were dreaming or hallucinating, I was seeing tiny black spots everywhere, I'm hungry but not hungry, I feel light headed and dizzy, I kind of feel like throwing up and my hands are trembling and so is my lip. What's happening to me?