So lately I've been having these terrible mood swings. They've been happening a lot, some good some bad. Yesterday I had a terrible one, later that day I had this weird sensation going through my head that is still going on today. I feel like light headed almost, like my brain is spinning, lifting limbs feel like its taking to much effort on my head, a sort of numbness in the back of my head. I'm feeling slow and out of it almost. It almost feels hard to keep food down. I've taken Advil to help, but no cigar. Is this serious? or is it something I should sleep on?