If you have been sexually active, you may be pregnant. If you have not been sexually active, this is abnormal. In either case, you need to see your doctor.
No, she can only get her period every 6 months.
Usually 2-3 months.
Quarterly (in other words 12 months divided by 4)
In most or all counties its once every 12 months, usually with a 15 to 30 day grace period after that
About every 3 months
Around 28 days but it can be less. Girls usually get it about every 3-4 weeks. But if its your first period sometimes it takes your body time to get used to it so you get it about every 2-6 months depending on your body till it is used to it.
Yes, I think so, you should only get your period every 28 to 30 days. I would talk to your doctor if I were you.
Usually, the manga is released every 2 months
usually every 6 months
Usually every 6 months.
No it is fine to only get your period every few months. It is normal everybody is different it depends on your genes. If you have a problem you should go see your doctor but any other way it's NORMAL.
I am pretty sure it's every 6 months but sometimes they can skip one.