This morning I woke up with pain in legs ,especially kalves and my feet. It felt like I ran a marathon during the night. I thought I'd be because I didn't sleep enough or something, so I ignored it but now at the end of the day, it still hurts alot and I have these pain spikes every now and then. Also I experience pain in my lower back (I'm guessing kidneys)
Is there someone that can help? Should I be worried?