Just been diagnosed with stage 3 kidney disease(routine blood tests l as Nov started it off) and have been reading up on diets etc. So far my GP is relying on blood tests,( next one end of March. Have had cancer (lung) 7 years ago and easy cleared 2 years ago. Having had a lot of symptoms for ages but not realizing what they meant should I push for a referral to a specialist at this time.?????