Ive been feeling dizzy and light headed since yesterday morning...every time i lift my head or get up i feel as though i have vertigo. whats wrong?

Several causes: Many causes of vertigo and depends on other symptoms including viral infections.When people say lightheaded -volume depleted-dehydration or anemia or low blood presure or low blood sugar.Then off balance many causes and then vertigo of which benign positional vertigo-most common.See a physician as too many reasons to go through here. https://www.healthline.com/health/benign-positional-vertigo