Hi Jacqui,

I am just as confused as you with regards to the weeks etc. Just leave it up to the ultrasound machine as it can detect by the babies growth and calculate it to how many weeks & days your baby is (it could change etiher 3 days more or less they always tell me). It is never 100% accurate but at least it gives you something to go by.

Hope this helps babe. Dont worry yourself too much about it.