Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Teen Girls' Health

Font Size

All About Menstruation

How Long Does a Period Last? continued...

It is possible to skip a month, especially if you have been ill or under stress. (Tell your health care provider at once, however, if you miss a period and are having sexual intercourse. Even if you are using effective birth control, pregnancy is a possibility!) But skipping for more than one month once your periods have become regular is another reason for a doctor visit.

When your period becomes regular, mark the date on your calendar for several months ahead. This will remind you to have tampons or pads on hand and help prevent accidents.

What Is Ovulation?

Ovulation is the release of a mature egg from a woman's ovary. It usually happens around mid cycle (about 14 days from the start of your last period).

Some might feel abdominal discomfort at the time of ovulation, but it’s usually very brief. This discomfort, medically called by its German name mittelschmerz (pain in the middle), can usually be relieved by the same medication used for cramps.

What About PMS?

Premenstrual syndrome, or PMS, happens to many teens right before their periods start. With PMS, you might feel:

  • Mild breast tenderness
  • Fluid retention
  • Anxiety
  • Dietary cravings
  • Irritability
  • Difficulty sleeping or excessive sleeping

When menstruation begins, PMS symptoms decrease.

Some young women find that they cry easily and are more emotional during this time. Understanding the feelings that come with PMS may help you cope with the emotions. If your symptoms are serious and interfere with your life, discuss them with your health care practitioner.

Should I Use Tampons or Pads?

Teens can use tampons, pads, or both during their period. Tampons are worn inside the vagina and come in a variety of sizes (small to large) with different absorbencies (light to super heavy). It’s important to change a tampon at least every four to 8 hours to avoid leakage and serious bacterial infections. According to the company Tampax, you can wear a tampon overnight, but insert a new one before bed and change it first thing in the morning.

Today on WebMD

Girl holding up card with BMI written
teen girl with lotion on face
Young couple holding hands
Blemish Blasters Tips For Acne Free Skin
teen girl on swing
Abused woman
Taylor Swift
The Pill Myths And Facts
Smiling woman, red hair
teen sleeping
Eye make-up closeup