Ive been on kesimpta for almost a year. The week before my shot for the last 3 months my symptoms start to creep on on me I now have pain in the right side of my head.going on three days now. I used to get migraines years ago. But havent had any for quite a few years. Now pain brain fog and other symptoms. Is this what they call crap gap. My shot is in 2 days.