Weird dreams

Hi all, Im taking Lexpro now for several weeks and I feel like it helps a bit while still waiting on therapy but I notice that my dreams became more vivid. Like they feel so real sometimes and I can even think in my dreams. Sometimes it is also around OCD but most of the time other stuff. It makes me so tired sometimes during the day because I do not feel rested with this dreams. At first I took my medication in the evening and then I also had a lot of scary vivid dreams so I switched to the morning but it is not helping enough. Does someone has tips please?

I had a really bad nightmare revolving around one of my big themes and I woke up with the panic still left over the dream as if it was real and I kept thinking about the situations. I tried to tell myself it was just a dream, but then it made me question real life. So then it was a cycle of ruminating about the events as though they were real and my reality which really messed me up bc my biggest theme right now is becoming schizophrenic/catatonic/"crazy." I feel stuck in a loop, I've tried saying the "maybes" and even talking to my partner about other things but it just keeps looping in my head "am I crazy?" "I can't differentiate between dreams" "I feel like I'm stuck in my head and I can't even talk". Any tips? I feel like I'm at the crescendo of my 20 years (lifelong) ocd due to stress from moving soon.

I have been nervous about flying since I am going on a trip tomorrow and the thought of turbulence has unnerved me but I have been doing ok with that thought and slowly getting used to it. I have been looking at videos and articles explaining turbulence and what it is and why it happens and I have been feeling better about it. I go to bed and I am definitely tired. I am at that stage where I am falling asleep but still awake and all of a sudden I get a random anxiety hit feeling and a accompanying thought of "I wanna die!". I immediately wake up like I was just fighting for my life and I keep repeating the thoughts over and over wondering if that's what I want or something. I sort of calm down and try to sleep but now I am getting random thoughts from tv shows, music lyrics, and scenes from said shows playing in a random order. Feels like I am losing it and I can't focus. I am afraid I am having some psychosis or something which increases my anxiety. Any help or insight would be appreciated. I have had Suicidal OCD thoughts before but this one sort of hit different since I was partially asleep.