Hi have had lower back pain for 10 plus years, but only when sitting, sleeping, hoovering, washing up, cooking dinner! if i stay in one position for more than a few minutes it starts to seize up and becomes extremely painful.... moving around, walking etc no problem at all... 3 years ago i started a new job, cleaning... i was hoovering for over 15 minutes, my back completely seized, i was in agony, i was off work for a month! and had physio twice a week for that month.. please help