Help please


Can someone please help me try to figure out what is going on. I haven't had a period since July. I've been feeling really weird the past like maybe 5 weeks, I've been getting really nauseous not just in the morning but like throughout the day. Sometimes I just get super hungry and want to eat everything but as soon as I eat it I have to puke it up or poop (sorry TMI I know). In the past four or five days I have been losing hair and In the past week I've been having light brown discharge, it does not smell. Nothing smells down there it just smells like vagina not like STD smelling. Can anyone give me any advice as to what is going on or what I should do????