Your initial visit will include blood tests to check for your blood type, Rh factor, anemia, immunity to rubella (German measles), hepatitis B virus and some sexually transmitted diseases (STDs). You may also be tested for the HIV virus. You may also have a Pap test to check for any possible changes in your cervix that could lead to cancer if it is time for this test. During other visits, you'll always be weighed and have your urine and blood pressure tested.