Hi, I'm a boy at the age of 18, and I've (during the 2 last days) been really nervous about some symptoms which occured all of a sudden.. It started yesterday morning, woke up and I felt a headache coming, I didn't bother and went to school.. At school, I started cold-sweating, and got a bit dizzy - I didn't bother much at school either, so I finished the school and went home, where I felt really tired and slept for 2 hours.. Few hours later, I had this soccermatch, which I probably shouldn't have played at all, cause when I got back home after the match, I got nausious, headache hit me yet another time, fever, back- and neckpain and also heavy breathing. I grabbed 3 paracets and waited half an hour for it to work, and when I thought I was getting better I went to bed, and then I noticed I wasn't better at all! I started sweating a lot, and it got so noisy inside my head - I didn't know what to do.. Eventually I fell asleep, woke up at 3 AM approximately, all soaking wet and I had was freezing so badly I had to put on a t-shirt and socks.. I don't know what this is, but it's scaring me a bit off, as I've only been catching colds and had Diarrhea.. I'm 1 meter 72 centimeters tall, I weigh about 65 kilograms, can you give me an answer of what's happening to me? Thank you in advance