I'm 32 years old and this was the first time this has ever happened to me. I was fine all day till night time. My body got really hot, but I was cold, shaking, week, my head hurt, and the right side of my chest was hurting. Seared my husband. I thought I had a fever, checked it, but that wasn't it, I went to bed, tried to sleep, woke up around 2am, broke out in a cold sweet. Some of my friends said it might be my blood sugar, but I know that wasn't it, Ive had blood sugar problems before, nothing that like that. When I got up in the morning, I was nauseous, and a bad headache. Someone said that I might be pregnant. Well I know that isn't it, I can't have anymore kids. Then another person said it might be menopause, so I don't know.