So, could it possibly have been a really bad virus that your slowly bouncing back from? That you are getting on with your activities is great! Keep doing that and see if you can put this behind you. Have you had any dietary changes? When I do, I'm often severely fatigued whether it is less sugar or more of this or that. They've checked you out overall and haven't found any red flags, right? That hopefully is relieving to you. Do you have muscle weakness still or the tingling/numbness?