Not sure how helpful this will be but I’m going to give it a go. I did a brief web search about the connection between vivid/intense dreams and antidepressant medication and there is some research that shows that the medication can result in a person having odd dreams. Considering antidepressants have affect a person’s neurotransmitters that isn’t surprising.
Now for my own experience. I’ve been back on antidepressants since last fall, first I was on Lexapro and after a month I was switched to Cymbalta. I normally have odd dreams but I recall when taking Lexapro that I did have more vivid dreams. Strangely on Cymbalta I’m experiencing the opposite. I don’t have vivid dreams or memorable dreams unless I forget to take it.
If I were you I would talk to your doctor about what you’re experiencing.