From the CDC website: Rubella is a contagious disease that can be very dangerous if you get it while you are pregnant. In fact, it can cause a miscarriage or serious birth defects. The best protection against rubella is MMR (measles-mumps-rubella) vaccine, but if you aren’t up to date, you’ll need it before you get pregnant. At IHR we screen all patients for Rubella during the initial diagnostic phase. If your test reveals you are not immune, you will need to get vaccinated for rubella through your primary care or OB/GYN physician, you should avoid becoming pregnant until one month after receiving the MMR vaccine and, ideally, not until your immunity is confirmed by a blood test.