Menstruation is an important and very effective way to protect yourself against pregnancy.

According to the Centers for Disease Control and Prevention (CDC), nearly one in three women will become pregnant during their lifetime.

In many countries, this means a woman has already given birth.

Women who do not have a menstrual period are at greater risk of pregnancy, especially those who are obese.

But how does menstruation affect the risk of getting pregnant?

What is the best way to prepare yourself for a period?

And can it even happen?

There are different kinds of menstrual blood pressure, which are based on different factors.

A low level of blood pressure means there is less of a need to wear a ring or brace to make sure blood pressure stays low.

A high level of pressure means a person has an extra heartbeat, so the risk is increased.

Some women, however, have a low or high level and are not considered high blood pressure.

Some doctors and patients say that this means women should not have regular or frequent periods because of the risk.

“A woman’s menstrual blood is a way to help her keep her blood pressure low,” said Dr. Rebecca W. Leong, an OB-GYN at the University of Wisconsin Health Science Center in Milwaukee.

“When we talk about blood pressure and how low it is, it’s because of how much your body needs to pump blood through your body.”

Women should also be careful with the type of tampon they use, and the types of lubricant they use.

They can also take extra precautions to avoid having blood clots.

The CDC has a list of some of the ways women can help prevent pregnancy.

For example, they can use condoms and get an accurate prescription.

If they’re taking estrogen, they should be careful not to have more than three or four sex partners in a year.

Women can also limit their drinking.

If it’s a long-term habit, they may want to cut back.

If a woman gets pregnant, it may mean she will not get a regular period for many years.

But she should get regular and frequent periods, said Leong.

“It’s not a problem if the women don’t get pregnant, but if they do get pregnant it could affect the whole cycle,” she said.