I'm pretty sure canadjineh addressed the kidney pain and the OP replied she has a doctor appt.

I wonder if PB cravings are at all related to the "low fat" part of the diet? I know if you crave a banana, your body is telling you to have potassium, for example. It could just be that PB is yummy, or that it's comfort food from when we were wee ones with a PBandJ sandwich everyday. However, maybe as we're cutting out fattier foods, it explains a craving for a fatty food?...

I make my son a peanut butter sandwich every day for school...and I ALWAYS used to lick the knife clean and sometimes even give myself a spoonful for "breakfast". I caught myself starting to lick the knife on my second day OP, but I stopped. Ugh, kinesthetic memory!

GL, and I hope you are feeling better soon!

Thanks everyone! I see my doctor in 2 weeks so I'll mention it ! I'm back on track today drank loads of water and no kidney pain so far!

Day two and going strong and no pain!