Transvaginal and normal ultrasound- help? Confused.

So I am 7dpo today, had an ultrasound to look for abnormalities because I have had three early miscarriages. Doctor thinks I have antiphosolipid syndrome, a blood clotting disorder that can cause miscarriages. Repeat testing needs to be done in a few weeks to confirm it though. I was told the doctor would give my ultrasound results to me in a few days. I didn’t get to look at it but during my vaginal ultrasound, husband said there was two circles that looked kind of like the picture I am posting (the top pic). I know two sacs means twins but I am only 7dpo so I believe it would be too early to see any of that. What else can two circles like this mean? Does anyone know?? Thank you