How long does a period last?

Varies by individual, age, type of birth control used, etc.

Indefinite.

Usually anywhere from 3–7 days. If your periods are lasting longer than 7 days you should see a gynocologist to make sure everything is okay.

Usually between 3–7 days on average. But I have known people to go longer than that. By like two days.

Umm for me usually from 4 to 6 days. Thats when I’ve been on the same birth pills for a while and I’m not too stressed out.