Hi there, just wanted to let you know you're not alone, and I'm having really similar symptoms. About 2 weeks ago I got a cold that got better and then worse again, and on Tuesday I woke up with sharp pains in my chest where my lungs are. On Tuesday, the pain was only on the right side, and happened whether or not I took a deep breath. I went to the doctor, they took a chest x-ray, and said it looked good and I probably pulled a muscle from coughing, but they said I would have to wait for results from the radiologist to be sure the x-rays were ok. Well, its 2 days later and now my chest pain is not only on the right side, its in the middle and on the left, in front and in back, when I breathe in. Needless to say I've been a wreck (I'm an ex-smoker too, and also 27 years old) worrying about lung cancer or some deadly strain of pneuomonia. I have another appointment tomorrow for follow up, but still no results from the radiologist. However, the doc told me they think it's either just a pulled muscle from coughing or pleurisy, which is just an inflammation of the lining of the lungs that can happen after a viral infection. I just wanted you to know I'm the same age, have the same history of smoking, and am having the same symptoms, so you're totally not alone, and I feel just as scared. I wish we knew eachother in person so we could sit and talk about it. I'm all alone just waiting for my appointment tomorrow, and waiting for these stupid test results. It sucks! I hope you feel better and I'm pretty sure it's not lung cancer (my grandpa died from lung cancer and his chest didn't hurt at all).