Feeling really strange & "out of it" - Not sure why?

I feel like I'm in a dream. Like my thoughts are really "hazy" or my head's "foggy". I also get really shaky almost like a bad anxiety attack & I feel like I'm about to convulse. It started a few nights ago around the time I would go to bed, & I would usually go to bed & wake up feeling fine. Then this morning I woke up and have felt this "weirdness" all day. Is it just a form of anxiety I'm not used to? Or are my nerves just totally shot? (Lots of stress/depression the last 6+ months...) Just curious. Thanks.