With DS we had a two vessel cord and it did contribute to him being small, but we also had problems with his heart and the placenta shutting down and reversal of flow along the umbilical cord.

The best thing we did with this preg was to get on Asprin straight away. I couldn't with DS as I was already experiencing threatened pre-term labor but now I am on 100mg of Asprin a day and the flow along this baby's cord is great!

I would ask your Dr about getting on Asprin to offset any flow issues that you might have with just two vessels.

Hope that made sense - been nesting all day and i am a bit fuzzy now!