Twin Intuition

I could be completely wrong, and really I'm happy with whatever the Lord blesses our family with. But I've been getting this strong feeling like I'm having twins. I just found out that I'm pregnant, this is my 3rd pregnancy, and I've never felt like I was having twins with my other 2 kids (not even a little bit) and Im just curious if anyone else felt this way.

So before your ultrasound how many of you just knew you were having twins and was there any specific reason why?