u/Fit-Watercress-2830

Hi everyone,

I’ve been having a strange lower back pain pattern. I can lie down on my mattress for a few hours with no problem, but after some time my lower back starts hurting. The unusual part is that the pain goes away almost immediately once I get out of bed and stand up/move around. Has anyone experienced something similar?
I’m wondering if this could be related to the mattress, sleeping position, SI joint, mechanical back pain, or something inflammatory. I’m not looking for a diagnosis, just experiences or ideas on what to check next.