I'm a 22 year old female and lately I have been feeling like I have the flu. Every morning I wake up and am extremely nauseous, have a headache, I'm dizzy, I get super hot and then super cold, don't have an appetite. By about 9 I feel like I'm going to pass out, so I eat and can barely eat a small muffin. Afterwards, I usually feel better for half an hour and then am back to being extremely tired, dizzy, and nauseous. I feel like I have put on weight in like the last two weeks, but I don't weigh anymore, I just look and feel really bloated all the time and nothing seems to help. I drink a ton of water, have cut the majority of my caffeine because coffee makes me sick in the morning. I used to get up ever day at 5 to go running and now I can hardly wake up by 8:30 because I'm so exhausted. I quit running because I was getting severe shin splints that wouldn't go away and it would affect the way I walked all day long. I have always been really healthy. One little factor that could attribute to this is the fact that I haven't had a period in 4 months, but I've taken numerous pregnancy tests and they are all negative. Hope this is enough information for someone to help. I plan on seeing a doctor, I just don't even know where to start or what to say.