There’s some difference between medical care in Canada, I too live in Canada.. I have also gone through the same as you, they found a nodule in my upper left lobe and I was going for ct scans every six months…I think it’s a process we all go through. I know the angst you’re feeling because I felt the same way, I would research information and then it would scare me because they always tell you the worst things possible..what did help me the most to cope with this is to tell myself that they found the nodule early and that puts you in a very favourable place, early detection is often hard to do but when it happens you will get some comfort from this, all the best wishes for good results.