Are you having twins?

With advances in neonatal care and increased use of assisted reproductive technologies (ART), the likelihood of having twins or more has increased steadily in recent years. In 2006*, there were 143,625 live multiple births in the United States, according to the Centers for Disease Control and Prevention (CDC). This represents a 13.77% increase over 2000 in the United States alone.

In the United States, twin births occurred at a rate of 32.1 per 1,000 live births in 2006; triplet births at the rate of 153.3 per 1,000 live births.

Despite the steady increase in multiple births, most people are genuinely fascinated with the unique phenomenon of having twins or more. And many women either suspect or really are hoping that "it's twins" when they find out they are pregnant. (I can't tell you how many women said, "I always wanted twins," while I was pregnant with my twins and shortly after they were born.)

If you are pregnant and think you might be expecting twins, view our list of early twin pregnancy symptoms. Of course, the best way to confirm that you're having twins or more is to have an ultrasound (also known as a sonogram). That's how I found out!

Learn more about twin pregnancy symptoms. . .

Learn more about your odds of having twins. . .

Learn more about twin ultrasounds. . .

Video: 4-D Twin Ultrasound

Your feelings: Finding out it's twins

Check out some of the best twin books to help you get ready for twins. . .

*2006 is the most recent year that statistics on twin births are available from the Centers for Disease Control and Prevention.