Anyone experience a missed twin?

Bambi

I’m absolutely terrified I’m going to go tomorrow (my 20 week anatomy scan) and there be more than one.

Sometimes I feel like the movement I see and feel are too separated or at different ends of my belly to be just one and I’m also huge for just 20 weeks lol (but it’s also my second pregnancy)

Twins also run in my family on my moms side

I haven’t seen the baby since 7 weeks which there was only one, so I’m sure I’m just stressing myself lol