I am taking duphastion for irregular periods from day 16 to 25 of period cycle..My ultrasound and
thyroid test was normal .I took first dose of duphaston from Nov .20 to 30.And I got my periods on December 7.Thejn again I took duphaston in December from day 17 to 26 ( I forgot the dose on 16th day, so I started from day 17.).My last dose was on 1st January..Today is 10 January..I didn't get my periods..I have been advised to take duphaston for 3 cycles to regulate my periods..Normally My period cycle was from day 28-34 days.When It got irregular , it shifted to 40 days.I want to know for how long duphaston course should be continued My age is 34 years .I am married..