Wine and pregnancy ?

Just want opinions please don’t be rude or mean if you have something conflicting to say. My doctor okayed a glass of wine before thanksgiving and when I got there I decided I didn’t care to have a glass anyways BUT I can’t seem to find any posts on here that agreee to much with him... a family member even announced it and embarrassed his wife because I guess she always had one every once in awhile at dinner and my MIL and everyone one else was like are you nuts!?! he said one glass only and no liquor obviously, but I’m just confused why he’d

Tell me it’s ok when I’ve read a lot of doctors say not at all. He said once in a while not everyday of course but I’m just thinking it’s better not to and maybe he’s just relaxed about that stuff too much. Any advice?