Early Ultrasound - Possibly Twins?!

I just got back from an early ultrasound at 5 weeks 3 days (I have a history of miscarriage, and I got pregnant while taking Clomid).

My OB immediately found a sac, measuring 5 weeks 5 days, and then started talking to me about another possible sac (which could be another baby, could be fluid, could be nothing, etc). It measured 5 weeks 2 days.

She said that we'll be able to see what happens with it at my next appointment (in just over two weeks).

Whaaaat?! 😱

Ultrasound Pic: