What they think of me...

Assumptions run rampant, not the way I'm thinking, though — not from them about me. I sit among a few dozen alcoholics, most if not all clean and sober, some for decades. But those that aren't, or are but can't follow guidance on silence, on anonymity... what if they know me, jump conclusions to wrong logical guess? Do I get the chance to say I'm not one of you? Does it matter? Does my need to justify say I have greater need to be here than they?