Sleep and anxiety

Over the past week everytime I try to sleep I start twitching a bit and I found out it's called hypnagogic jerking but I also will just suddenly jolt awake from sleep breathing hard and being dizzy as heck. I also have horrible anxiety that makes it worse. Ughh I really dont want to pass out. I'm going to see a doctor but I think the appointment is next week or the week after. This all started after I got off of an SSRI (lexapro) Has anyone else gotten this before?