Hi, Acute Pain On Waist, After Performing Any Domestic Work

Hi,
Acute pain on waist, after performing any domestic work bending forward and trying to be in standing position. Don't feel pain while walking or sleeping. If I keep my spine strait all the time, no pain is felt. But after siting relaxed for five minutes if I want to stand up, feels pain, after walking for 1 or 2 minutes, pain disappears. All the time slight burning sensation is felt on wait.