Here in Ireland we have combined care, I see an OB every 4 - 6 weeks and my GP in between... I think it's only one, it doesn't really make much sense that they've missed it in the hospital, it was probably the placenta and he's mistaken it for another baby! I'll update on Sunday with whatever we see in the 3D US. Thanks for the answers!
With my last pregnancy, My doctor had said he found 2 heartbeats at about 13ish weeks. upon my 20 week ultrasound there was only one, He must have been getting the cord, or placenta in my case. I would think they would have seen a second baby by now. Good luck
With you having been 8 weeks yes a baby can be laid behind another one and missed but I would nto think so at 20 weeks. That used to happen more a long time ago but we have more advanced us machines now. But hey who know things happen!!! I guess I would be nervous too being that dar along and nto knowing if it were twins! Why are you seeing a GP and not an OB? I would have a good US at the hospital if that is the case by a trained tech who does them all the time. Sorry if I misunderstood that part.