Thanks MG, Kimbaz and Alan

Oh man, i swear it must be the bananas that did it!!!
Seems problems coincided with when i started having them daily as part of breakfast so i guess that has definitely contributed.

No pain meds, but i havent been up and about a lot lately so i'll get moving more frequently too.

Thanks for the explanation and ideas Alan, very appreciated. I guess I'll get back onto kiwi fruit with skin as well as they worked a treat.