You may have had a Vision. That is a lot different than a dream.
I have had these before. Once someone telling me a close friend would be converted, and it wasn’t my job, but someone in heaven was working on it. And he was converted. Called me to tell me, in fact, a year or so later. He became a Catholic.
I know they are meaningful but I am always careful not to give them the same veracity as those things that believers all accept as the word of God. I share them sometimes but only when guided to do so and when I am sure I am doing ao without any selfish motivation.