hmmmm, I'm sitting here with OH and we're on our 2nd bottle of red for the evening, we also got through 2 bottles last night, and I dare say, will get through a lot more by the end of the weekend. But to be honest, right now, I don't care. I MC 6 days ago and found out today that I didn't get the job I went for, and during the month before getting my bfp I had maybe 2 or 3 glasses of wine, no caffine, no crappy foods. It didn't make a difference and while I now know that theres no baby, and we're just taking this month as it comes without the pressure of 'ttc' then I'm going to bloomin well enjoy my glass (or 4) of red.
From a researched point of view, as far as I'm aware, the 'baby' doesn't start to absorb anything from the monther until the 6 week mark, and between 6-12 weeks are the most important to not drink anything. the occasional glass up until conception, WILL NOT lead to a MC.