Here is an excellent place to complain, I don't think anyone can be "strong" all the time - it takes too much energy! Staying busy helps me a lot too. I can't work at all anymore but I try to find activities I can do at home other than sitting and watching TV all day. When I'm feeling well enough I chat with others online some so I don't feel as isolated.
I can be a bit OCD which I think contributes to my paranoia about any health related symptoms... I report whatever I'm feeling to my doctors and if something is really bothering me I might emphasize that. In the end though I know I have great doctors and I try my best to be patient and let them do their job. But you are not alone in getting anxious about whatever little symptom or every scan!
It's definitely tough when scans or the next step isn't clear, I have had my share of scans where the doc told me to wait and see... then next scan things grow and was back to treatment for me! Wish you the best.