I've had this problem forever, but it seems to have gotten worse lately. I'll think I've had conversations with people, or that certain events happened, but it turns out it was something I dreamed. It embarrasses me sometimes because I'll bring up a memory with someone and they tell me it never happened. Or I'll think I completed a task, but later get in trouble for not doing it. The worst it ever was was when I was in the hospital last time. I remember talking to people who weren't there, but I don't know if it was real or not. Then one night I woke up in the middle of the night because a nurse told me to wake everyone up for vitals at 2 am. I started knocking on doors to wake people up, but another nurse came and started yelling at me, telling me noone told me to do that. I told her another nurse told me to, she said who. I said the short hispanic lady, she said there was no nurse like that on duty right now. I think I must have dreamed it, but I thought it was real.  I just now googled "dream-reality confusion" and the first thing that popped up was a paper on dream reality confusion in borderline personlity disorder. I never thought of it as related to bpd, so I was wondering if anyone else here has this problem.