Hi Lydia,
Thanks for telling your story. It was interesting to me. I had a similar experience.
I went to a new psychiatrist because I was having trouble with the first one (another story) and I enjoyed talking to him but I was a little annoyed because he told me that he had a girlfriend in high school that had the same first name as I did. But I thought oh well, that kind of stuff always happens to me and I can deal with it. At the end of the session he wrote out the prescription for me. I vaguely remember spelling my last name. He handed it to me and I put it in my purse.
Imagine my surprise when I got to the store and went to hand it to the pharmacy and it had a totally different last name on it. Of course I had to take it back to the psychiatrist and have him do it again.
At this time I did not know I had DID, so I thought he accidentally put in his ex girl friend's last name instead of mine. Haha. The joke was on me.