about a month and a half ago i began to have muscle pains almost every day. often the pains would move from place to place and i even began to have joint pains in my knees, i even noticed a rash on the top of my foot which resembled pimples and itched. as of about 3 weeks ago the pains seemed to disappear and the rash on my food is no longer itchy but there are red spots remaining. now 2 days ago i began staying up through the nite averaging about 2 hours of sleep per nite due to finals week (im 19 in college). im now sick with a slight fever, sore throat and the joints in my knees are beginning to hurt again. also lately i seem to be losing my appetite. could all these symptoms somehow be related to any kinds of cancer? im wasn't sure where to post this, thanks!