Hi. I'm F19. My doctor advised me to take duphaston for 3 months to ease/help with my 'severe' pms before doing ultrasound (for possible cyst). I've been in medication for 1 week and 4 days but I've been also thinking to stop due to constant headaches and disturbed sleep. I haven't been able to sleep properly since day 1 and my headaches doesn't go away. Would you advise to still continue or stop taking duphaston?