waiting for diagnosis is this common, it is stressful

Still waiting diagnosis new CT every 3 months. Pneumonia resolved now back to low grade flue like symptoms I've had over a year and a half. Night sweats, rash body aches, malaise and exhaustion. Nothing to major. How long before any of you actually got a diagnosis, I feel it's hard to move on with this in the back of my mind. Thanks, I have 3 CT scan reports here I haven't paid all that much attention to just kind of random. Words that are sticking out when I add them up seem a bit more serious then I have taken it. bilateral apical scarring posterior upper chest bilaterally along pleura. once again irregular nodular opacity  of 10x 6 mm(previous one was 7x6 a week before and the previous one to that said 6x8mm) I assume a little differential due to different radiologists reading and first two are w/o dye, last with dye.  other terms, mild coarsening of interstitial lung markings and minimal air space disease remains. Also mild thin walled cylindrical bronchietasis. persistent adenopathy is suggested along the right heart border above diaphragm which is stable at 3.3x2.3 cm. (note only other comparison on that area is from a week previous stating the largest node in that are was 3.2x1.1cm that was w/o dye) with a cluster poster to this which measures 3.3x2.4cm I am completely confused by all this thanks for response