Same. It's got so bad it keeps me awake at night, and prevents me from taking naps. Heart thumping harder than when I go for a run, but just while laying down on the couch.

I've noticed my omega3 supplements help a lot though, as in, almost instantly. It comes back if I forget to take them for a few days too, so that's a possible cause as well. Just sucks to have that in the back of my mind.