answer:Try not to listen to such friends, or pay too much credence to them anyway. I know how you feel, though. There was a time in my life when every headache was a suspected brain tumor, every cut was likely to be gangrenous, and every cough was either pneumonia or lung cancer. Once it actually was pneumonia, which I found out after suffering for a couple of weeks. But let things take their course. If you have a fever for three days, for example, then see a doctor. Otherwise keep this in mind: When you hear hoofbeats, think horses, and not zebras – and don’t think about unicorns at all.