I get this all the time, I say it is a feeling of dis orientation, I used to have Meniere's disease when I was in my 30's and that was really awful, everything spinning, this isn't nice but not as bad as that. i have to sit up, or stand up very slowly, take care turning over in bed, not a nice feeling, I take my blood pressure and it seems OK, I take Cinnarizine tablets, doc prescribes them or you can buy them from the pharmacy as Stugeron, they are sold as travel sickness pills, they are the only thing that helps me.