It sure sounds like detox. I know a lot of people advocate high dose and just blow through detox but we are all different and personally im not into a lot of undue suffering. Overloading the body with the junk that causes detox isnt good for your either.
If I were in your shoes I would lower the dose until the detox signs are very tolerable. Sure it may take more time to reach sufficiency but there is something to be said for comfort.