Familiar Nightmares

Do you ever have one of those nights where you experience a familiar nightmare?

I just woke up from one.
Not only have I had this nightmare before, but when I am in it, it feels as though I have BEEN there before. As if it was an alternate universe. Even in the dream it feels as though it is happening right this moment AND that I am in control of myself during it. It is in real time - in this house, this exact night, with both Dex and RJ here. In it I am even wearing the exact same pajamas as I am right now. It also always includes information about the previous owners. And even in the dream I always remind myself that if it were real and actually occurring, that Dex would have gone berserk and alerted me to it. Even in the dream I realize it is not real.

Not only that, but whenever I have this particular Familiar Nightmare, once I wake up, not much time has actually passed. At all.
Normally when I have nightmares that linger, especially ones that freak me out to the point of wanting to turn on every single light, it is a couple of hours before my medication alarm. This one, however, is commonly only 2-3 hours after we have gone to sleep.

How something so strange can feel so familiar is mind-boggling.

It also doesn't help when I wake up to RJ sleep talking. That always creeps me out... until I find it funny.
Right now it is not funny yet.

My one saving grace in it is that I only visit Familiar Nightmare when I have a very specific medication. I do not have to take it on a regular basis, but each time I do, that is where my mind travels to.

P.S. It also does NOT help when I get up to have some Boost to settle my stomach, and accidentally gulp down a few sips of the STRAWBERRY kind. (We bought a variety pack just to see if I enjoyed Vanilla or Strawberry.. tastes can change right?)
Nope nope nope nope nope. Disgusting.