Your patient presents with fairly consistent pain in his low…

Yоur pаtient presents with fаirly cоnsistent pаin in his lоw back.  He rates is at a 3/10 on verbal pain scale.  He notes that he feels the pain mostly when he is falling asleep in his bed and when he wakes up.  He feels that the firm mattress his wife makes him sleep on contributes to the pain and is the reason for the pain as this occurred about the time they got a new mattress.  He describes the pain as throbbing quality.  He notes when he extends his back the pain gets better, but sometimes can still feel the throbbing.  How would you proceed.