Illness or bad sleeping position?

I've always had problems with my joints, I can and do make cracking noises from almost every single one of them, especially my spine. But especially the last few weeks I wake up every day with a REALLY stiff lower back and also a bit painful. I have to do some stretches till it cracks very loud and then I can finally get out of bed. Could this be caused by my bed or by some kind of illness?... click here to continue

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