My doc has told me the same Anti-D at 28, 32 & after birth. I'm O- & DF is 0+. You will also need to have one if you experience ANY bleeding during pregnancy or mc. I had one when my first mc occured. As far as I have read the risks of NOT having the anti-D, to me, far outway anything I have read on having it. There was a good piece of info online here when I was looking into it also https://www.bellybelly.com.au/pregna...tive-pregnancy HTH