Blackout Drunk

Last night I drank with my boyfriend and his best friend. I drank so much I blacked out. My best friend who lives an hour away drove to my house in the middle of the night because of me. I was so far gone. I don't remember a thing from last night. How can I come to terms with not remembering? It really scares me. And should I ask what happened or is the saying "ignorance is bliss" apply here?