The Testaments Ball Season 1 Episode 5 Editor’s Rating 4 stars * * * * « Previous Next « Previous Episode Next Episode » Photo: Steve Wilkie/Disney Most girls get their periods between age 10 and 15, some as early as 8. Gilead doesn’t do science, but we know that the world in which it exists is plagued by infertility and falling birth rates. Given how anxious the Plums are about getting their periods, we can suppose that amenorrhea is a problem. Delayed menarche, too. Let’s be generous and say