Colds And Flu More Condition_symptoms I Keep Getting Colds/flu Could It Be Serious?

I keep getting colds/flu could it be serious? - colds and flu more condition_symptoms

I have a cold or the flu a week. I have a few days they have so soon I have a very bad one? My mother worries that many say could be a cold, illness or disease to go? Is that true? She wants to go to the doctors and more blood tests. Should I go? Can you serious?