It's possible you'll hear a popping or cracking sound in the course of the adjustment. It’s almost nothing to worry about. That which you listen to could be the sound of gasses like oxygen and carbon dioxide releasing from your joints. You shouldn’t truly feel any pain through the adjustment. https://www.theorthopaedicandpainpractice.com/alleviating-aches-exploring-lower-back-buttock-pain-relief-solutions-in-singapore/