Can like 2 or 3 small-medium sized sips of sangria (a spanish alcoholic drink) make me forgetful?

if i havent had alcohol before and if i was to drink it now, would i forget stuff thats happened in the hours after i had it? so 10 hours later to when i drank it would i not be able to remember stuff thats happened in those hours??? is 2 or 3 sips enough to make me forgetful?