Please HELP! I quitted smoking cold turkey just some weeks ago, but the last week I started to find it difficult to breathe. I have a very uncomfortable sensation: when I’m trying to take a deep breath I feel like my lung won’t widen the last little bit, and this is very pesky. I decided to have a medical control and I have had a chest X-ray on my chest. But my doctor said that everything is okay and that I have no problem. So I decide to go for a pulmonary function test these days, but I feel so nervous and overwhelmed. I have read many posts about other “quitters” that where complaining about the same problems in breathing, but, unfortunately I found no responses. Do you think it’s normal to feel this way? Is this a normal reaction of the lungs? Should I be worried about this or I’m just overthinking? Please help me.