My Husband had 6 sessions chemo and psa fell to 0.62 from 15.85. He is on zoladex too which brought it to 1.7 before 1st chemo. He worries it should be 0.0 something as he has no prostate He had the test not even 5 weeks after last session which I thought was quick Can it still fall for a month or so after chemo. I know we should be grateful and we are but he is very nervous