yup I think there would be a few who have done that... me, with my first...
Guilty of that here... I got blind on my birthday this year.. and i mean blind. 3 days later I found out i was pregnant. In my defence, i took a test the morning of the night of the party.. lol.

I think one glass of wine will be perfectly fine Enjoy!

PS. Ive been hanging for an ice cold beer this whole pregnancy.. im still considering it.