Hi, so I had just bought this new bed and slept for almost 4 months + now, so I just noticed whenever I sit on the left side on my bed, like just in the middle part of the left side, when I sit on it, not hard , but just normal pressure, I noticed a sound, something like a squeaking sound ? Or like air letting out, like the sound goes " YIKK… " , but I then tried on any other parts of the mattress, even the edge, but totally no sound at all, only on the left side of the mattress , which means 1 side of the mattress giving this kind of sound, what could be it ? How do I determine to make sure where the sound is coming from ?
P/S - I did not jump / put anything heavy on it.