Considering that the average length of a pregnancy is 40 weeks, medical experts are saying that women need to get pregnant before May 15 to ensure that their baby boy or girl will be born on the year of dragon, which is regarded to be the most powerful animal of the Chinese zodiac, often symbolizing might and intelligence. 　　Doctors say that the business is better than usual when it comes to artificial inseminination, as they see a 20 percent increase in people who want to conceive during this specific period. 　　On the other hand, traditional Chinese medicine practitioners are saying that Chinese medicine, which includes acupuncture, can also up the chances of pregnancy.