Simply put, Yes, within reason. Pregnancy ultrasounds are a routine procedure performed throughout a pregnancy and healthcare providers have been doing ultrasounds for over 30 years. Within this time, extensive studies have been carried out on ultrasounds and there has been no evidence to show that there is any harm to mother or baby. All ultrasound scans should adhere to the ALARA principle, As Low As Reasonably Achievable, in order to minimize exposure but rest assured that ultrasound is the preferred diagnostic method as there is no radiation like with an X Ray and no surgical procedure involved.