I am not on any medication but I get those episodes too. For no reason I'd wake up feeling 'normal' or just from feeling really awful I'd notice that I feel nomal and able to cope and am relieved only problem it does not last long and because I know that it will pass and I will be feeling dreadful again. The first time it happened to me I was so relieved to be feeling ok and thought Thank God I am feeling better but over the years I know that when I have those moments they dont last so now when it happens I just hope that the feeling doesnt go away to quickly.