8 week sono confusion?!?! HELP

Amy • Married❤️ mommy of 👦🏻👼🏻👼🏻👶🏼

So yesterday I went in to get our sono done. I was 8 weeks exactly. There is a dot above the baby. Can someone explain to me what that is?!?? Is it a hidden twin?! Twins run high in our families.