Don't torture yourself abella
Coming from someone who has spent the last 27 months waiting for that bfp I think I would have gone stark raving mad if I hadn't drank for that long not to mention ostracised by all my friends. Don't get me wrong, I did the whole not drinking, eating well, exercising but not too much frequently but it didn't help.
I decided a long time ago that I would continue life as usual until I get my bfp and am a frer early tester so knew I'd know very early on.
We did have a bfp back in Aug which sadly ended in a mc and of course I cursed myself for drinking before it and everything else from "lifting that box" "cleaning the bathroom" "sitting in the car too long" "being too active" "not being active enough" etc etc etc in very early pregnancy even though I didn't drink much or often in the week before I found out.
So I then decided that with this "apparent" increased fertility in the following month, (all total lies, or at least for me anyway) I wouldn't drink for a while. After af arrived and no bfp I decided to stop torturing myself. Especially as every time I refused a drink people were asking me if I was pregnant or quietly looking me up and down settling on my tummy making their own decisions whether I was pregnant or not which was not what anyone needs after a mc. I was in a very dark place and taking myself away from every social occasion to avoid people's reactions made it even worse.
I have luckily now had another bfp 2 weeks ago and admit I did drink for a few days before I had my very early positive at 3w2d. I don't feel bad about this at all this time, even though another mc has threatened but is clinging on, hopefully. So long as you stop as soon as you get your bfp you'll be fine as the baby doesn't take anything from you until the placenta takes hold until about week 5-6 as it survives from the egg sac. My gp even told me when I saw her last that it's ok to have a drink occasionally when pregnant. I won't but it's what she said. I also have a friend who missed her 1st trimester as didn't know she was pregnant and had been drinking heavily for all of the 12 weeks and she still has a healthy baby.
Wow, sorry for the essay.
Good luck achieving that bfp 