I have had continuous colds since getting the flu shot in October. At least 8 times since October, I get a stuffy, runny nose and coughing. It always begins with sneezing. The colds do go completely away for days, even weeks, yet I get sick time and time again. I am a stay at home mom, I do have 2 children and I help at school, but I have never had this many illnesses. Is this something that I should be concerned with?