Playing football is manly.

Kicking. Scoring. Arguing over the offside rule! Manly! But missing a goal is stressful. ARGHHH! Stress! Real men know it could be more than one reason woman misses a period. 
Bro tip – be a champion caring dude, talk to her and offer to take her to the doctor. Thumbs up! 
Do women have periods forever? 
Errr. Don't know la.
Menopause stops periods – usually once women are in their 50s. MENopause. Men, eh? Ladies put up a lot with us. Hur, hur, hur.