First Ultrasound Questions

Andrea
I have my first ultrasound on June 16, I'll be exactly 8 weeks. 
After doing some research I don't think I'll have an ultrasound that day, but I just have this weird feeling it's twins.... I know that's crazy. I don't have a huge history of twins in my family or in my husbands. But it is driving me crazy and I want to know! 
Should I say something to my doctor or just wait until my 12 week appointment?