When you first get your period, it's normal to be confused and wonder what's happening to your body. If all your questions aren't answered here, talk with your doctor, parents, or someone else you trust.

Gender words are used here to talk about anatomy and health risk. Please use this information in a way that works best for you and your doctor as you talk about your care.

Most girls start their periods between the ages of 11 to 13, but some start earlier and some later. You'll start having periods when your body is ready. Many girls have their first period about 2 to 3 years after their breasts start developing. Girls get their periods at different ages. Try not to compare yourself to your friends. You will each get your period when it is right for your body.

The average cycle is about 28 days (the time from the first day of one period to the first day of your next period). But, don't worry if your period sometimes skips months for the first few years. You might even have a period twice in one month. That's okay. It may take six or more years after your period starts for your body to start having normal regular cycles. It is normal for a cycle to take 21 to 45 days. That's why you hear women talk about a “monthly cycle.”

Each girl is different, but it's normal for a period to last 2 to 7 days. Talk to your parents or doctor if your period lasts longer than 8 days for 2 cycles in a row.

The lining of the uterus is rich with blood. So the color of your menstrual flow can be pink, red, or brown. The flow can be thick, lumpy, or runny.

For most girls, the amount of flow for an entire period is only 4 teaspoons to 12 teaspoons, although for some girls it may feel like more. Expect the flow to be light on some days and heavier on others.

During your period, bleeding can look like more than it is. Don't let this frighten you. But if you ever soak a new pad in 1 hour or less, let your parents know.

Only if you tell them. You are very aware of your period, but you won't look different to other people. If you glance at yourself in the mirror, you'll see this is true!

If you have a period and have sex, you can get pregnant. Having periods means that your body is able to create a baby. But you can only get pregnant if your egg meets with male sperm during sex. Sex is something you should talk with your parents or your doctor about. You are still growing. Getting pregnant now wouldn't be good for your health or the health of a baby. So even if it seems like many girls your age are having sex, do yourself a favor— wait.

Boys don't have periods, but they do go through puberty. They grow body hair, get pimples, and some grow tall very quickly. Many boys feel embarrassed when their voices suddenly change or when they act clumsy. And they get moody, too.