False recovery is the worst thing, when you think that this is the end, then sluggishnes and headaches comes to remind you that you are still sick. Headaches and sluggishnes with dizziness still keep coming back, like last monday it was bad to the point I though that I'll lie down on the floor and won't get up. From what I've found, every time when I feel sick, my blood pressure is above 140/90. Check yours It may be the case.