You need to see a doctor URGENTLY!
Yeah it's probably my lungs I think... not hard to breathe just when I do its hurts in my lungs.
Make an urgent appointment to see your doctor.
The symptoms of pain when breathing may be pleurisy. As you have been a heavy smoker, you need your lungs checked out to rule out other lung abnormalities.
The stabbing pains may be from your lungs, or may be from trapped nerves in your spine.
Make an urgent appointment to see your doctor.
If you are having difficulty breathing, go to the ER urgently.