I blacked out last night.

I used to binge drink in high school. I stopped the first time I blacked out. I can't handle the feeling of being uncontrolled like that. I drink responsibly on occasion now, but after a couple of babies, that means I'm done two to three drinks in.
I don't even know how it happened, which is why it's so terrifying and is triggering me so badly. We were home, only close trustworthy friends. I had three drinks. I was cooking dinner, and... Nothing. We were up for four moee hours. I'm really freaking out. My husband's insisting that I just seemed tipsy, not even stumbling. I feel terrible.