Alcohol and pregnancy

Under my glow today it had a topic of "is your partner giving you a hard time about the sip of wine or extra chocolate you ate"... Or something like that... I've heard having a glass of wine a day was good I've heard sips here and there of wine or beer won't do harm... But I've also heard the complete opposite. I haven't drank anything since I found out I was pregnant (which I found out before my missed period) but was just curious how people felt and their opinions and facts on it