Can you tell me what is the difference between common cold and flu and should i take my medicine?

Flu vs Cold: In general, the flu will cause you to feel more ill than a cold will. Flu sxs can include fever, marked aching of muscles and joints ; significant fatigue (if these symptoms did occur with a common cold they would usually be less intense). Colds tend to lead to more nasal congestion than the flu. Most people do continue to take their regular medications.