Thanks for the query to H.C.M.Forum.
Within a month you lost 15 pounds , this is a cause of concern .
This may be due to ,
1 As you stated that there is blood in urine may be due to cancer in kidney .Diagnosis can be confirmed by M R I of both kidney . As carcinoma is the main cause of blood in urine with weight loss
2 May be due to renal failure
as blood present in the urine with weight loss . Diagnosis can be confirmed by ultrasound of both kidney.
3 Anemia is one of the foremost cause of weight loss and urine in blood . Diagnosis can be confirmed by hemoglobin
level examination .
As you stated that there is light headed with nausea and chest pain. Heart disease is already ruled out . Light headed & chest pain may be due to hyper acidity and gastritis so for this you need antacid but if , symptoms are severe then take proton pump
In my opinion consult a nephrologist
and get his opinion and treatment.
Good luck. Dr. HET