spinning in my dreams

I had a great day yesterday. I can feel myself healing and I've had other people point it out. When I saw my therapist she could see the change in me. I have no doubt in my mind that I am in a better place without my narc. The time that I spend thinking about him is becoming less with each passing day.
This coming weekend I am attending a great fundraising event with some friends. I brought my exN to it with me last year. He would never have known about it without me since it was a fundraiser and involved giving back. Anyways, it is a lot of fun and I'm very excited to go. The probelm is I can't get over my fear that he will show up. It is silly but I feel like he is everywhere and I can't shake the paranoid feeling.
This morning I woke up because I was dreaming that he was there. He had people telling me about his new girlfriend and I was trying over and over to reach him by phone but he wouldn't answer. I was totally spinning in my dream. (his latest thing was to ignore my calls and texts to get me angry)
When I woke up I was upset however I quickly realized that I am glad that I am no longer dealing with that. (while I'm awake) I'm sure it is my anxiety about the unknown this coming weekend. I just don't think I should stop living my life and doing things I enjoy because he "might" show up.