Since when you are suffering with this pain ?
Chrck for the mattress as its flat or its been up and down, coz of mattress in the morning pain will be severe.
Visit nearby physiotherapy clinic and take electrotherapy for 10 days, the pain will be reduced in few sitting, after you will be suggested with strengthening exercises, untill the pain reduces you must avoid any lifting of objects while bending down.
maintain proper posture, take healthy
calcium rich diet, Do hot water fermentation twice a day.