"I am 38 years old and this is my first pregnancy, and may last. Pregnancy and babies need to be healthy, but I do not read much about the risk of birth after 35"
Nowadays more and more people get pregnant after 35 years like you, so you're not alone. While the average rate of pregnancy at the age of 20 years of decline, the rate is actually rising at the age of 35 years. Now this is not uncommon the first women to bear children or starting a second family after the age of 40 or 45 years.
If you already live in this world for over 35 years, of course you know that there is no y ang without risk. Likewise pregnancy at any age. Although now a very small risk of early pregnancy, but it also slightly increases with increasing age. But generally the mother who started a family in middle age that their profits due to start at a time when they were really ready, far outweigh the risks. And they were comforted by the fact that medical discoveries have now been able to reduce the risk.
The main reproductive risks that must be faced by a group of women your age are unable to conceive because of deficient conditions kesubburan. If you have been through this nrisiko and have been pregnant, you also face the possibility of the risk of having babies with Down syndrome. This risk increases with maternal age: 1 in 10,000 in women aged 20 years, 3 of 1,000 birth after 35, and 1 in 100 for mothers aged 40 years. It is estimated that this disorder and other chromosomal abnormalities, although still rare, occurring at a more advanced age because older eggs have also (every woman is born with a lifetime supply of eggs) and never got the X-rays, medications, infections and so on. (But now known that eggs are not always responsible for the occurrence of chromosomal abnormalities. An estimated 25% of cases of Down's syndrome associated with defects in the father's sperm.)