Sore throat. no fever. stuffy nose. pain in shoulders. no loss of appetite. happened suddenly. dry/wheezing cough.

Early URI: This sounds like you're starting with an Upper Respiratory tract Infection (URI). Often the cause is a virus, and if you think back of who you might have been in close contact with - you may 'figure out' what germ you have. The important thing is to keep track of your symptoms, and try to manage them as best you can - Tylenol, Robitussin, chicken soup, REST -etc. If symptoms worsen, see a doctor.