want a vbac, but placenta at front, is this a problem?

[juice]

i had my 20 week can 3 weeks ago and was told that placenta was at front only a couple of cm's up from c section scar. will this be a problem. will the placenta grow in next 17 weeks over scar. hope that makes sense.
hope someone can tell me, i have 4 week check today but i not sure if the doc clued up on this or not.
thanks

Juice, as far as I know (antenatal teacher and VBAC support co-ordinator for the NCT and a VBA3C mum myself) the placenta shouldn't encroach on the scar - as the uterus grows it should move further up away from the scar (imagine a balloon growing) but your consultant might ask you to have a late scan to double check that all is well.