It's a very common fear hablsefan - but mostly and unfounded one. Once you quit, you will find that most people really could care less about whether we drink or not. As alcoholics we obsess about what people with think, or that they will notice that we aren't driking....but in reality most people don't even think twice about it.
You also have no obligation to tell anyone if you don't want to. Certainly if you have a regular crowd of drinking friends, they might notice - but you are likely also going to need to make changes in your daily routines anyway. AKA - hanging out at bars probably shouldn't be on your list of activitites anymore - even if you were just drinking water or soda.
Getting sober is a whole lot more than just not drinking alcohol - it involves changes in what you do, who you do it with and where you do it. It doesn't necessarily mean you just stay home all the time, but you will be surprised to see that most people's lives don't revolve around drinking alcohol. There are a whole world of other activites out there for the doing to keep you busy forever.