Can being pregnant cause an abnormal pap smear? help please?

Hormonal changes.: During pregnancy the female hormonal levels are different than during a non-pregnant state. Hormones (like estrogen) have an impact on the appearance of the cervical lining (which is sampled in Pap tests). These hormonal changes can make the cervical cells look 'less mature'. This appearance of the cells is different but not 'abnormal' and should not be confused with pre-cancer or malignancy.