JMO has exactly the right info for you.

Don't worry yourself "prediciting" things that you have no idea to be true. While we do share stories of unsympathetic people in our lives, there are also people who ARE kind and understanding. The "clues" that you have so far point to the fact that they respect your privacy, are acting in a professional manner, and therefore you have nothing to worry about.

Be sure to discuss your job-related fears with your T. In my case I know that I always have anxiety that the symptoms that took me out of work (being unable to concentrate at work, fatigue, etc.) are going to hinder me when I get back... but of course we have been in treatment to remove these problems and it is likely that once you are back at work you will quickly get back-in-the-groove (after a short adjustment period) so I would not worry about that either, that's just another prediction.

Work with your T on reestablishing that inner trust, you know you can do your job, depression may convince you otherwise and put all sorts of doubts in your head, but those are false doubts, so have confidence that the "proof will be in the pudding" and once you return to actually doing (rather than thinking about doing) you will see that all of those skills are still in place and you'll be back in the flow in no time.