Secondary amenorrhea is mentioned more than 3 months or 90 days but in question it is wrong and mentioned 6 months. Please clarify the exact duration to be considered for secondary amenorrhea.
It’s 3 cycles or 6 months of amenorrhea - which is counted as secondary amenorrhea
and pri.amenorrhea- never experienced menses
(at 13 yr- without sec sexual characteristics.
at 15 yr - with sec sexual characteristics)