Hi all, I am new to this but thought it may help as docs don't seem to go into any detail regarding condition. Been stage 3 CKD for 18 months now and GFR been a steady 42 until I suffered a massive heart attack last September requiring emergency surgery to unblock the artery. Since November I suffered high potassium levelling my blood but couldn't determine if they were responsible for the way I was feeling. Then in January of this year I was having fortnightly bloods done and in the last 2 weeks of January my GFR had dropped from 42 to 38. Been feeling very nauseous, pain in my lower back right hand side and suffering muscle cramps in my whole upper torso. My skin is very itchy especially my lower legs and my stomach yet my doc insists I shouldn't be feeling any lll effects from the CKD. Has anyone suffered similar or have any overall advice please. Any help appreciated.