Congratulations, farfaraway12! Best to quit while you are still young before real damage is done, and the stupid habit gets ingrained deeper into your brain! I really don't think you have too much to worry about, having only smoked for 2 years. Just think what we older folks have to worry about, after smoking 20, 30 years and more!

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I think you will be fine. If you really are that concerned about it, speak to your Dr., possibly ask for a PFT to see what your lung capacity truly is. If you don't have asthma, or any other symptoms, I doubt they would even do it for you...but maybe you can at least get a chest xray out of them.
I agree with alsaser, EXERCISE!! I do this a lot more now that I don't smoke. (It's easier now) Ride your bike, or walk a couple of miles a day...you'll grow to love it, and may even become addicted to that! It makes us feel sooo good! And it's very good for your lungs, drawing in all of that oxygen. Take a good multi vitamin, and fish oil capsules are great for your health. Eat lots of fresh fruit and veggies. The more colorful they are, the higher the antioxident content, which is good for preventing disease.
Keep up the good work, and give your self some nice rewards, every now and then!
Deda

~Almost 22 months not smoking now, after 30 years and 10 quits!~