possible twins missed ???

Tori • Mommy of four 💚
I have a question I went to my first ultrasound and they women focused on my baby the whole time didn't really move it around well I have my sister record it to show my husband and I was looking at the video and at the very end the ultrasound lady goes to the other side and there's a sac and I swear Thera something in it top pics is the baby she seen and didn't move bottomis what I believe another sac and baby any thoughts ?