I have been feeling really light headed and a little nauseated for a couple of days, to the point where all I want to do is take a nap. I have been worried about heavy spotting too - lasting anywhere from 8-10 days per month. Are these symtoms related? Last time I had my iron levels checked, they were a little low, but still within normal range. What could be causing my symptoms? I have an appointment with my OB/GYN, is there anything else I need to address in the meantime?