I just found out i'm pregnant and had raw steak tartar for dinner. am i infected?

With what?: Toxoplasmosis is an infection that can threaten the health of an unborn child. You can get it byhandling soil or cat litter that is infected with the parasite. You can also get it from eating undercooked meat or from uncooked foods that have come in contact with contaminated meat. If you have been infected previously (testing can show this), this will not be a risk for the baby. See OB doc.

No UR pregnant: Eating raw food doesn't cause infection unless the food is infected. Your body's immune system can tolerate many insults under normal conditions. Pregnant bodies, however, rarely behaves normally! your body is in high gear to protect the baby. You should avoid uncooked meat, fish, eggs, poultry during your pregnancy to minimize the risk of infection to you both. See your dentist and ob.