Help! need to know if there's possibly something wrong with me from my family's second hand smoking?

How about a hint?: Without knowing what symptoms you are having, how can someone possibly know what you might have? Second hand smoke is mostly associated with an increase in respiratory problems - frequent colds, asthma, sinus infections, sometime bronchitis and pneumonia. There is an increased (though small) risk of lung cancer. Ask them to smoke outside, and see your doctor for evaluation of your health.