I had a scan at 20 weeks and they said my placenta was posterior and low lying. Didn't really say much else but just said they'd rescan me at 32 weeks which I've got booked in the next couple weeks. However I have had two private scans in between the 20 week scan (due to previous early miscarriage) and for peace of mind as had a couple of worries. One of those scans was just last week. At both my last two private scans the sonographer has said my placenta is covering my cervix os. So I'm guessing this means placenta previa. Again no advice given just to go to 32 week nhs scan. I'm currently 28 weeks so another 4 weeks till scan. I've got a midwife appt next week. My worry is I work 12.5 hours in a hospital constantly on my feet, have 2 breaks a day. I don't know whether I'm at risk or I should continue as normal as ive only just really read up about placenta previa. Any advice?