I went to my first office Christmas party for the new company I work for last night, after an already horrendous afternoon of stressing and overthinking things, catching an uber to the wrong place and then having to sit on a bus with 50 other people I didn't know at all for a full hour each way.

Once there, I found a few familiar faces and had a chat to them and moved on to the next lot of people. We had an open bar and in all it was a great night. I ended up partying away with management and met other people while my coworkers just sat in the corner and looked miserable. 

At one point, the dreaded office conversation crept up, and one manager casually mentioned to the other manager in our circle of people that I took my first customer order the other day and did a good job, which made me feel quite awkward, as I'm not a person who likes talking about myself. I tried to turn the conversation to something else, and eventually ended up sitting back down with the other coworkers again. They then decided to go out for a smoke, so I went with them and stood there for conversational purposes. 

I wasn't aware that one of the teenagers I worked with smoked, as she never has smoke breaks at work or "looks" like a smoker, so I asked her if she was one of those "smoke while you're drinking" kind of people, to which she snapped at me and told me she can do whatever she likes. 

After that, I excused myself to get away from everyone and found another person I had never met before. 

I have days off now, and don't go back until the middle of next week, but these 2 conversations are now eating away at me. Did I do something wrong here? To me they were genuine questions. Is it just a self-conscious thing? Am I reading too much into this?

I'm dreading going back to work again next week.