What are some ways to force your first period?

There's actually no way to force your first period. The age at which you hit puberty is largely down to hormones in your body.

I guess you could technically undergo some sort of hormone treatment to encourage your period to come, but I don't think you'd find a doctor in the land that would recommend it - let alone help you out.

Pumping hormones into your body is pretty serious stuff, and could have very serious consequences, especially if you haven't reached puberty yet.

It's much better to let nature do its thing and your first period will arrive in due course. As soon as it does, you'll probably be wishing you didn't have to put up with periods anyway!