What Causes Delayed Periods While On Fertomid?

my cycle started on the 12th of april. i started fertomid 150mg on the 14th cycle day 3, it is now the 17th my cycle stopped yesterday to a no flow @ all. i still have one more day (april 18th monday) to fertomid. did the med stop my cycle? is there still a chance of getting perg? my normal flow is 6-7 days, not 3-4. does fertomid have a history of this issue. thank u for your time