Am I pregnant if I eat sperm?

Depends. The act of eating them will not make you pregnant. However, if there were acts of unprotected penetrating intercourse during the period prior to your ingestion, a few of the swimmers may have made it through before the main load was released & that could have done the deed.
Not from eating it. Eating sperm will not cause pregnancy, but a woman may become pregnant from the other related activities, such as putting any sperm-coated fingers or objects into her vagina. Sperm will get digested as food once it enters the stomach.