Can some body please give me some real answers about lung cancer?

My mother died from lung cancer last year(well it was lung cancer and spread to her brain, she never even smoked) so I don't know everything but I know some things. Also, I was having similar problems exactly like you and I am a 27 year old male. I asked for chest xray, which the hospital did (I dont have a doctor so I went to the emergency room one night when I started to panic thinking about things) and also got the ct scan on my abdomen (which cost about 7 grand so I would not do that if you dont think its that serious). I believe what I had was trapped gas or maybe a deficiency in fiber or from not eating healthy. I dont know which one, doctor said it was fiber just based on my symptoms and not based on blood tests or anything like that..said that my bowels were backed up and I was probably constipated inside because fiber helps break things down better..but I eat alot of vegetables so I dont think thats what it was, but I started taking fiber pills anyways, eating more balanced meals, and taking gas x. My pain was towards the bottom of the ribs, not near the heart or lungs. You say its under your ribs, but are you sure its even near the area where the lungs are? If they say its irritable bowel syndrome, that would be below the lungs..not the upper chest near the heart. If it was a lung problem, it would be in the upper chest, not where your intestines are. The doctor doesnt have to do an xray to tell if there is a lung problem. Putting the stethoscope on your back and listening to your breathing is enough to determine wether the lungs are involved or not. The doctor would hear wheezing or something else if it was the lungs. I dont trust doctors myself because many have been wrong about things in my life, so get a second opinion if thats possible and chest x rays arent like thousands of dollars so really push for it when you go there and explain how the other doctor wouldnt do it and they will be more willing to do it because they will see that you stopped going to him because he refused and you will not go to them anymore if they refuse too. The odds of it being lung cancer at your age are almost 1 in a million. The statistics are below