Twin pregnancy symptoms?

I posted this before and deleted it. But I’m still curious, what were your symptoms for a twin pregnancy? What made you think it was twins before an ultrasound? This pregnancy is so crazy already, and I’m only 4 weeks today. I’ve been pregnant before and never had symptoms like this this early on. And I got a clear positive test EXTREMELY early. And yes I know all pregnancies are different, this is just VERY different. Thanks in advance ladies. 😊💕