Hi, I had my first scan sunday at 12+4 she had difficulty scanning me as im a little on the chunky side, nothing was said when she was scanning me but when i came out the scan and got in the car i had a little read of my notes and the comment read "second sac seen no internal echoes" i have no idea what this means and what i can gather from google is that its vanishing twin syndrome. has anyone had something similar and then there were 2 babies at next scan or had the 2nd sac just gone? thanks in advance xx