I started taking Lexapro about a week ago, half a pill only, and upped it to a full pill last night for the first time . Last night, I had a pretty vivid nightmare about someone breaking into my house and pointing a gun at me. I'm pretty freaked out and don't know if it was the pill or what. All I watched on TV was HGTV. Anyone ever have nightmares from these? I don't see it listed in the side effects so I'm kind of nervous now to continue taking this.