Hi Tharidler, I think that this may represent to you the thing you fear most in yourself - ie, you would never wish to say something unkind to some one and upset them but you are afraid that you have/might. If so this is all part of the paranoia and loss of self esteem and in some respects self trust that comes with depression and the overwhelming desire that people must never think bad of you.
I have a simelar thing that manifests in a recuring dream. I have only just worked out that this is what it means in the last year and since finding out I haven't had it! It started when I was little (before 10) and has been freaking me out in a 'what the hell MUST this mean? way ever since. But now I know.
Basically, in the dream I am in a public place with friends and family chatting away and all having a nice time. Then, out of the corner of my eye I am aware that (now this bit is changable but always the same sort of gist) some one has just said 'oh my god what's this?' or 'wait a minute that's not what I think it is is it?' or sometimes they think what they can see is something it's not but I know the truth, or sometimes it is a police taped cordoned off area and an excavation is taking place. and i KNOW, immediately, that I have in the past murdered some one and buried them there and it is about to be discovered and there will be undenyable evidence that it was me and everyone will know. And it occurs to me all at once like I had buried it deep in my subconscious and conveniently forgot about it and I can remember actual memories about it and everything.
Now for years this freaked me out to the point where, when I was depressed, I actually scoured my living memories in case I actually had done something like this and buried it. I even thought maybe I was a murderer in a previous life and I should be regressed and find out (I don't even really believe in regression!). I scoured every memory I had thinking even if I didn't murder someone I must have done something awful and forgotten about it what was it.. The 'memories' in the dream seemed so vivid that I could even conjur them up now if I tried and they would feel real.
My other theory was that I must be pretending I'm some one I'm not and it's only a matter of time before people realise I'm a fake. (I felt a fake because I was happy shiny Lol on the outside and reeling, insecure, overwhelmed Lol on the inside).
It turns out, through much therapy, that it is my worst fear that anyone would think bad of me. And any bad thought anyone might have, be it that I'd taken the last biscuit, or said something accidentally that had caused offense, would be akin to murder (one of the fundamentally worse things a person can do that I can think of in my book). The dream is therefore about how I am afraid people will discover that (I'm only human) I am flawed, though I try really hard to be perfect, and if they did discover that, it would be as bad as if they had discovered I was a murderer.
There is a reason for this but I still can't talk about it yet.
I think you are describing something similar maybe? You are not in you heart a bad person, but we are all flawed human beings, and I;m going to make a very sweeping statement here, but I would go as far as to say that everybody in here, by the very nature of having fallen victim to depression, feels the same way.
We are all beautiful, flawed human beings. Don't worry.