For several months now, I've been having horrible coughing spells. It usually lasts for hours and leads to dizziness and heavy phelgm production. My throat feels scratchy and I can taste blood after each cough.
I don't smoke and never have. But my dad used to smoke two packs a day up until 10 years ago. Even with the coughs, I usually play basketball for hours and often jog for three hours straight without a problem. I don't have a problem with shortness of breath while exercising.
Does any of this sound like sign of lung cancer or am I being paranoid?