Breastfeeding after drinking

I've been breastfeeding my son since birth I supplementing with formula at night. Last night me and my husband had a night out thanks to my mom for watching the baby. I had about 8 beers last night I stopped drinking around 130am and I pumped this around noon today. Does this mean the milk I pumped isn't good to give to baby? Would I be okay to nurse him at 4pm today?