I am a 46 year old male I have had testicular cancer twice-1990-enbryonal cell carcinoma and 1997 seminoma type , most recently I have had three HCG blood test. 1st was 6.9, 2nd was 3.9 and the third was 4.9, my insurance will not pay for a pet scan, a current CT scan was questionable on my part. My doctor wants to wait another month and a half to repeat blood work. What should I do?