I'm very familiar with that roller coaster ride and I really try to be aware of the signs when I slipping into a lethargic state. I often ask why the meds haven't fixed things for me and am told they can only lessen the symptons but only I can fight the fight. I have gotten to the point when I start to see the first sign I do anything I can to get my thoughts in another direction even if I can't get off the couch. I don't always succeed but I never stop trying. Fresh air if only for a short time while sitting on my porch always seems to help. I also used to get horrible migraines and took a pill called Avert, not cheap but they worked literally in minutes for me. Hope you feel better!