What Is The Treatment For Weakness , Body Ache And Bruise All Over The Body?

I'm a 21 year old female not over weight pretty healthy. For the past few months I have been feeling weak. I have to eat every two to three hours. My vision will sometimes be foggy or sometimes I will go blind fo a few seconds. I get andom bruises on my body. My body will feel like it is hurting mostly sore. I tend to sleep a lot during the day and for a week or so I have been seeing that I am always tired or hungry. I really would like to know what is going on with me. And it sucks because I do not have insurance so idk what to do. I would like to be fixed. )=