I have had 3 scans over the last 4 weeks each showing I have a low lying posterior placenta. There has been some confusion over whether it's covering or just touching the os. Today's conclusion was its overlapping by 8mm. I know threads about placenta previa come up from time to time, but I was just wondering whether it's really likely to move, especially as it hasn't done anything much in the last 4 weeks. Also, so far, touch wood, I've had no bleeding. Have any of you had an asymptomatic low placenta right to the end of your pregnancy? Does bleeding always happen at some point? I'm due to see my consultant next week and have been booked in for a scan at 38 wks. Thanks!