You are most likely to get pregnant if you have sexual intercourse with a male partner without using birth control. It’s important to remember that even having sex once is enough to get pregnant.

Most women in their early 30s or younger have a high chance of a normal pregnancy. According to the National Institutes of Health (NIH), women over the age of 35 are at higher risk for health problems during pregnancy. High-risk pregnancies are monitored more closely to detect potential problems.

Other risks that can affect an otherwise healthy pregnancy include:

• giving birth to multiples
• high blood pressure (hypertension)
• cardiovascular disease
• diabetes
• cancer
• kidney disease
• infections

Original article: https://www.healthline.com/health/pregnancy#risks