Why do women have tender breasts before their periods and also when they're pregnant? And how do you know if it's due to pregnancy or a period?
When women get their periods or are pregnant, their hormones change. Even though periods and pregnancy are different, the hormone changes that go with them can cause lots of similar issues — like breast tenderness, acne, and mood changes.
If you've had sex, it can be hard to know if things like breast tenderness are caused by a period or pregnancy. If you think you might be pregnant, see your doctor or visit a health clinic like Planned Parenthood.
To help avoid an unplanned pregnancy or STDs, use condoms every time you have sex.
Reviewed by: Larissa Hirsch, MD
Date reviewed: August 2013
* Names have been changed to protect user privacy.
|Planned Parenthood Info for Teens This site from the Planned Parenthood Federation of America has information on relationships and sexual health for teens.|
|GirlsHealth.gov GirlsHealth.gov, developed by the U.S. Office on Women's Health, offers girls between the ages of 10 and 16 information about growing up, food and fitness, and relationships.|
|Why Are My Breasts Sore? Breast soreness is common among teens, but it can still seem worrying when it happens to you. Fortunately, breast pain is rarely serious. Find out why your breasts may hurt and what you can do about it.|
|Do You Need a Pelvic Exam to Get Birth Control? Find out what the experts have to say.|
|About Birth Control Before you consider having sex, you need to know how to protect yourself. Read this article to get the basics on birth control.|
|Condom Before you consider having sex, you need to know how to protect yourself. Read this article to find out how condoms work - and how well they protect against pregnancy and STDs.|
|Talking to Your Partner About Condoms Some people - even those who are having sex - are embarrassed by the topic of condoms. Here are some tips for talking about condoms with your partner.|
|Birth Control Methods: How Well Do They Work? Some birth control methods work better than others. This chart compares how well different birth control methods work.|
|All About Menstruation Periods can be confusing. Get the facts in this article for teens.|
|About Sexually Transmitted Diseases (STDs) You've probably heard lots of discouraging news about sexually transmitted diseases. The good news is that STDs can be prevented. Find out how to protect yourself.|
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