This happened to me too! I also started an SSRI for my anxiety and my psychologist said that would cause my dreams to be more vivid too. I had a dream last night that I accidentally ripped my back skin off and had to go to the emergency room. Then I had to live with my, all of sudden, crack head father in a hostile while I was recovering from surgery. Sometimes they feel like they’re nightmares when I wake up but so real when dreaming.