Twins?!?!?! Thoughts?!

Ma

Had my confirmation of pregnancy today, I’m 8w 1d. This is my second pregnancy. My sons first ultrasound looked totally different than this one and he looked like a gummy bear lol and didn’t have anything around him. This looks totally different from his and besides the yolk sack, there’s a light blob above and slightly below baby. I thought twins doc said no - thoughts?!?! Just curious what y’all think! Love to all the mamas!