My MIL was prescribed a glass of wine daily in her 3rd tri with her 3rd child. She had hormone problems which weren't confirmed until she had SEVEN miscarriages (she managed to carry two children to term in between all of those). She was very stressed out, so the doctor told her to have a glass to relax every night. Baby turned out fine.
In addition to it lessening anxiety, some doctors will actually recommend a glass of red wine in the 2nd or 3rd tri to help calm an irritable uterus and help stave of pre-term labor.
I think anything in first tri is too chancy, but later on in pregnancy, a small amount can have benefits for some women who suffer from anxiety or irritable ute. Obviously we're talking about the occassional glass, not consistent drinking here. And I would say only when the benefits outweighs the risk, so not like a "just because i want one" glass. Research it and come to your own conclusions.
And congrats on quitting smoking!! It's hard at first, but it really does get better!!