Hugs to you.
Funny how so many of us think our drinking is one of the best kept secrets ever. Then, when we get sober we start to realise that just ain't so. Must be said though, I've found it much easier to keep my alcoholism private now I'm sober. Also, since my sobriety has become more established the shame of it has diminished.
Are you an alcoholic? If so, the most important thing to focus on is your recovery. You can take it as a judgement, or you can take it as a simple statement of fact. Whether they do or don't like it, well, that's their business. The only time they should be concerned is if they thought you were still drinking and it might affect their child (or yours). If it's just gossip, they'll soon find something more interesting to talk about no doubt as you stay sober. Just stay sober and keep doing the next right thing and things will get better.
BB