Is it normal for an 18 yr old to get their period 6 or fewer times a year yet still cramps and backaches almost every month?

While the frequency of periods can vary from person to person, having only 6 or fewer periods a year is considered infrequent or oligomenorrhea. Additionally, experiencing cramps and backaches almost every month despite infrequent periods is not considered normal. It is advisable for the person to consult a healthcare professional, such as a gynecologist, to determine the underlying cause of the irregular periods and to discuss appropriate management strategies for the cramps and backaches. The healthcare professional may recommend further evaluation through tests or examinations to rule out any underlying medical conditions.