I assume the Psychiatrist visit is at the bequest of the Urologist who thinks you need one after fasting 28 days!
I would like to add that a loss in symptoms is a good sign but not always conclusive proof that the cancer has been eradicated completely, so your plan of fasting for another 40 days should accomplish this.
The body is infinitely wise in selecting morbid tissue as fuel and as a priority in autolysis.
Fasting will also strengthen the Immune-System (one of the best ways of fighting cancers) but personally I would adopt measures in-between fasts to boost your Immune System even more via nutrition.
Nutritionals and other items that will vastly strengthen the I.S and therefore fight any cancers are.........
#1. Supplemental Vitamin D3. (10,000 ius per day)
#2. http://www.tbyil.com/White_Blood_Cells_Immunity.htm