I’ve been having this weird thing where the back of my head throbs/pulsates, it feels like the blood vessels are really throbbing. It’s not painful as such but it feels debilitating, like you feel if you are dizzy. It comes and goes, painkillers don’t seem to affect it, nor cold packs. When I lay down I can really feel/hear my heart beat pulsating in my ear. I do suffer with migraines so I wonder if this is just a new type of migraine for me? It comes and goes a lot quicker than a migraine would though, might only last half an hour, or half hour on, half hour off kind of thing. Anyone had similar and know what it could be?