I had an early ultrasound, I was dated at 5 weeks exactly at the time of the scan which was exact to when my last period was. I had been looking at other peoples scans at 5 weeks before I had the scan so I knew what to expect. On other scans there’s a dark circle with white edging inside the sac, mine has these two lines? I was asked to come back in two weeks but she didn’t say why. Now I’m worried something wasn’t right and she didn’t want to tell me until she was sure by carrying out the next scan. Has any one had anything similar? I’m wondering where there are two lines instead of a circle. (It’s a zoomed in pic)