So on Saturday night I went out to a sorority event at a bar. At this event I did cocaine for the first time and I had also been drinking. Before the event, I had 3 glasses of wine and a little bit of vodka. When I got to the bar my friends and I did coke. After that I had one shot and one mixed drink from the bar. I remember taking the shot and I remember starting the mixed drink but I do not remember finishing it. After that drink I completely blacked out and I can't remember anything that happened. I have a pretty high tolerance and I know my limits when it comes to alcohol and I know that I did not drink enough to black out. I normally drink more than that on a night out and I can remember everything. I have never experienced a blackout like this. When I got back from the event, I threw up a lot and I can remember what happened after that. Throwing up from alcohol is also unusual to me. I have only thrown up once in my life from drinking and that was because I didn't eat dinner before. The day after I felt fine, I was a little jittery and sometimes nauseous. I didn't really realize that I hadn't remember a lot from the night before until my friends told me all of the things I was saying/doing that I don't remember. At first I thought that maybe it was a combination of the coke and alcohol but I barely did any coke and I did not drink as much alcohol as I normally do. My friend told me that coke normally makes you feel more sober and aware so she thought this was weird too. The event was private and your name had to be on the list to get in so everyone there was either in my sorority or was someone's date. Is it possible I could have been slipped something? Maybe by the bartender?