Mixed episodes are pure hell on earth, As already said ,, they can last a few days to weeks to months . best thing to do is keep in touch with your T and Pdoc, Med changes can help.

Few years ago I was in mixed helll... I literally was on my bathroom floor scrubbing with a toothbrush and bawling my eyes out exhausted but there was no way I could even lay down for more than 5 mins.

Hope you are feeling better soon