What to do after a night of complete blackout?

Last night I experienced a complete blackout for the first time. I have no memory of how I ended up sleeping in the bed of the party’s host. Apparently I asked them I wanted to crash. The last I remember was having food around midnight and the next thing I am waking up at 6 am with no memory. Freaking out! What to do next? I am worried about the stuff I have done or said because I was surrounded by people I am not particularly close with.