Possible hidden twin

So I have had this hunch that I'm having twins, I can't shake it. I've had 3 ultrasounds, two done by the dr office (one at 6 week, the other at 8 week) my 3rd one was done at an elective place and the woman was not very thorough or very professional. Anyway that was done at 13 weeks. I was looking through my images from the 13 week, and came across this. I have a bicournate uterus so I'm wondering if maybe they missed a twin. Thoughts?