There are various hormonal methods of birth control that use only progestin:
The mini-pill: 28 tablets which you have to take every day at the same time.
Depo-Provera: an injection with hormones, to be repeated every three months.
Intra Uterine System: device placed in the uterus which continuously releases a small amount of progestin.
A hormonal implant, consisting of one or more match-size rods that are placed in the upper arm, daily releasing a small amount of progestin.

When you use only progestin your periods are likely to become irregular. Some girls stop menstruating altogether.