The last week of the embryo stage.
About the size of a strawberry — or a tree frog, or a cake pop. 3.1 cm (1.2 in), 4 g (0.1 oz).
What's happening this week. All the major organs are in place and starting to work together. Joints can bend, and tiny nails begin to appear on fingers and toes.
All major organs formed. Joints can bend. Tooth buds are appearing.
The blueprint is finished — from now on the job is mostly growing.
What your partner can do this week: Ask if you can come to the first scan — on the NHS it's usually between 11 and 14 weeks — and book the time off. Add your own questions to the scan, not just your partner's. Talk about who you'll tell first once you're ready.