I went for my 12 week scan and seen my baby measuring 11.5 weeks all healthy and well, the the sonographer found a second sac but was unsure of why it was there or what it was she took some measurements and told me it looked like a bleed. I waited for her to bring my notes back out only to be called back into a room. She then told us we were pregnant with twins but the other only measured 7 weeks and to call my midwife for some advise. At the time I was shocked and didn't really take it in until I thought about it. Why didn't she get a second oppionion in the scan room and why didn't she look into the sac to see what was inside it. In my maternity notes she has put 2nd feat us has no hart beat ! She didn't even look. I have been told by my midwife that unless anything happens, bleeding etc, then I will have to wait until my 20 week scan to find out what has happened to twin no 2. They seem to think it will reabsorbe back into my body. Has this happened to anyone else and has the second twin grown ? I can't believe the will leave me 2 months wondering if I'm going to have twins or 1 baby, and it's strange knowing there is still a baby inside me possibly not alive. I already have 3 children but really need so advise.