Is it twins?!

Ok so, I'm 4+4(I know super super early!) but i already have a tiny bump, I know right?! I'm already feeling super uncomfortable, I can feel the pressure in my tummy, breathless, needing to wee every minute, already always hungry, sickness all day everyday, back ache, really bad cramps in my bottom tummy! I'm just wondering how you ladies "knew" ye were having twins before your ultrasound?

I've mine on Friday! 😊