Hi there, I can relate to that situation. I was never a sloppy drinker , always standing straight and never slurring my words, I too hid drinking from my spouse. A sneaky one here and there and filling the glass when someone left the room. I really think if that's road your heading down it might be time to answer a few difficult questions truthfully. I have a feeling you may already know the answers.
There are great people here to give abundant support and advice and I would say to you take it with both hands! This is the best place for you to start , wishing you all the best. I'm only day 4!
Good luck with everything