Last Period Of My Wife Was 30 Sept 2016 With

Last period of my wife was 30 Sept 2016 with average of 29 cycle. Two months she was operated for ovarian cyt, first cycle after op no pregnancy and Dr prescribe Fertomid-50g. No sign yet for pregnancy and she is due today. What chance of pregnancy with the pill provided male sperm count is ok. It is would be a second born. First born is six years now...