Hi, I am a 34 year old women, I got sick in December just before Christmas. I went to the doctor 4 times. He told me that I had bronchitus and gave me meds. The cough got better and o did my chest, but I have had a heavy feeling in my chest for about a month now. When I lie down it feels like I have a lump in my Throat. I don't smoke, never have and am not overweight. Can I have Lung cancer? I am really worried