Brief Answer:
COMPLETE THE COURSE, THEN WAIT FOR A WEEK XXXXXXX
Detailed Answer:
Hello
Thanks for trusting us with your health concern.
Sometimes young women have mild
hormonal imbalance, due to which there is a missed period.
If other causes are ruled out (
pregnancy,
thyroid imbalance,
polycystic ovaries etc ) - then this simple imbalance can be corrected by giving
progesterone withdrawal.
Duphaston contains progesterone - when it is given continuously for 5 days, and then stopped, there is hormone withdrawal effect, which leads to bleeding.
She should complete the 5 days course of Duphaston.
After that, bleeding generally occurs within 3 - 5 days, maximum within a week.
So please finish the course, and then wait for one week more.
IF she fails to menstruate by then, further workup is essential - such as FSH, LH, TSH, pelvic
ultrasound.
The cyst described by you is small, and is mostly a functional cyst, not harmful.
She should have repeat ultrasound 3 months after the first ultrasound, as most such cysts disappear on their own.
Stress, anxiety, weight gain, personal or professional or academic tensions, change in sleep or eating habits - all these can also cause menstrual delay.
Do not worry, as she will mostly respond to the Duphaston withdrawal - just complete the 5 days, and then wait for a few days more.
All the best.
Please feel free to ask for further clarifications.