Hi, I know exactly what you are going through. Let me tell you my experience. I am sure it will make you feel better. They found a "nodule" on my right upper lobe on an xray. I had NEVER had a bad xray, so I freaked out of course. I was sent to have a ct scan done, to be sure it was a nodule and not a shadow or something else. It was a nodule, from what I recall it was 2.5 CM x 1.5 CM, so mine was bigger than yours. I was then sent to a Heart and Lung Surgeon/Specialist, Dr. Gordon. He looked over my xrays and ctscan and told me that he didn't think it was anything to be concerned about. He put me on some really strong antibiotics to see if it was maybe an infection, went back 2 weeks later, and it wasn't gone, I was really going nuts now, I was sure that I had lung cancer. Dr. Gordon still informed me that he didn't think it was anything and that he wanted to monitor it for a few months to see if it would grow, which if it did it was more likely to be cancerous. Three months later I go back to his office for another xray, still not gone, but hadn't grown. Dr. Gordon said that he wanted me to have 1 more ct scan just to be sure that it was nothing. This ct scan came back that they had found a tumor INSIDE my heart!!!!!!!!!!!! After doing a TEE test, which is where you are asleep and they stick a tube down your throat that has a camera on it, to make sure that the tumor is actually there, it was! This was something that had to come out. I was told that I had to have open heart surgery! By the way, I am a 28 year old female. I was in disbelief. I asked Dr. Gordon what about the spot on my lung and he said that during surgery he would check it out. Guess what???????? The tumor INSIDE my heart was NOT cancerous, and he did get it all out which was a big factor, and the thing on my lung was just a fungus. I am greatful for finding that spot on my lung because if it was never found the tumor inmy heart would have eventually killed me. Another thing when the doc wanted to "watch the nodule" I thought the same thing, "what if it grows out of control over the next few months, and my doc told me the same as yours, that it wouldn't. I know how hard it is to be positive and think the worst, because that is what I did. I put myself through SO much stress and and anxiety, but when I look back on it, I wish I would have been more positive. It is probably nothing. Also, I had the fact that I had been smoking for the past 12 years!!! I haven't smoked since the day they told me I had a nodule on my lung, and that was 6 months ago. I hope my story has made you feel a little better. I guess my point was that not everything is the worst. Try to stay positive, if you need to talk, I am here.