I read this today in john bunyans book grace abounding, and i think this can help you understand some of the stuff that has been going on with me, i am so blessed i am not the only one.
At another time, though just before I was pretty well and savoury in my spirit, yet suddenly there fell upon me a great cloud of darkness, which did so hide from me the things of God and Christ, that I was as if I had never seen or known them in my life; was also so overrun in my soul, with a senseless, heartless frame of spirit, that I could not feel my soul to move or stir after grace and life by Christ; I was as if my loins were broken, or as if my hands and feet had been tied or bound with chains. At this time also I felt some weakness to seize upon my outward man, which made still the other affliction the more heavy and uncomfortable to me.