Hi Thrill! Welcome to NT.
I just finished 3 days of IVSM about a couple of weeks ago. I am finally starting to feel normal again. That 1st week off of them was pure heck as my body "reset" itself. Since you were on them for 5 days, I would think it may take you a bit longer. Hang in there and if the side effects get too troublesome, give you dr. a call.