An ultrasound scan is typically able to detect multiple pregnancies, such as twins or more, between 6 to 8 weeks gestation. During this time, the sonographer will look for the presence of multiple gestational sacs or fetal heartbeats. However, it's important to note that early ultrasounds may not always accurately identify all multiples, and a follow-up scan may be needed later in the pregnancy for confirmation. Additionally, specialized ultrasounds like a transvaginal ultrasound may provide clearer images and better detection of multiple pregnancies at an earlier stage. If you suspect you might be carrying twins or more, it's best to consult with your healthcare provider who can schedule an ultrasound examination at the appropriate time to confirm your suspicions.