First trimester testing; we usually break that up into two groups. One, over 35, and one under 35. Over 35 years old, may get recommended to do more invasive tests to determine the chromosomes of the baby. The initial testing is a blood test to determine your blood type, anemia, thyroid, and many others; and then genetic testing, like Cystic Fibrosis and Fragile X, there's a bunch of tests for ethnicities, and then invasive and non-invasive tests.
The second trimester is usually a lot less testing. There is a test for women under 35 called the AFP or Triple Marker Testing; and there's a test for called an amnio for women over 35, that may be offered by your doctor.
Also, most doctors at around 20 weeks, will send you to another doctor, a perinatologist or a fetal medicine doctor, that will do a big ultrasound to look at the baby from head to toe.
The third trimester -- This is exciting because we are getting close. The testing there is for gestational diabetes and anemia. You'll probably get an ultrasound to check the position of the baby to see if the baby is breech; your doctor may make some recommendations. Also, for a culture at the end of the pregnancy, if positive, you may need some antibiotics. Towards the end, the doctor may do another ultrasound to determine the baby's weight.
It's pretty exciting.