By 16 weeks your baby will be around 12cm (5 inches) from head to bottom and weigh around 130g (4½ oz) - about the same weight as an apple or a pear.
It's active in there - your baby is experimenting with lots of different movements, including thumb sucking and grasping the umbilical cord!
Fingernails and toenails are small but perfectly formed. If you could take a peek inside, your baby would look like a perfect little human, but very thin and reddish; there’s no fat layer yet, so the blood vessels show through the skin. Never fear – the filling-out bit comes next!
Keeping your cool
Being pregnant is hard work, even when you're sitting still, and your heart is pumping lots of extra blood around your body right now. It’s no wonder many pregnant women seem to have their own in-built central heating system and feel hotter than they used to! If the weather is warm, take extra care to keep your cool – drink plenty of water, and take your time getting from place to place.
You might begin to feel tiny fluttering movements in your stomach as your baby moves around – which is sometimes called “quickening”. Some women say it feels like butterflies or bubbles inside, though for some it's more akin to popcorn popping!
If this is your first baby, don't worry if you don't feel anything for a few more weeks. Those first movements can be hard to identify if you've never felt them before!
If you have been suffering from tiredness, this may well be improving now, and your energy levels are hopefully getting back to normal. Make the most of this lovely time!
Nutrition tip: One great way to make the most of your ‘5 a Day' is to drink vitamin C packed fruit juices like orange or cranberry. Alternatively, try HiPP Organic Fruit Juices, which are rich in vitamin C but are low in acidity (good for helping to avoid heartburn). Getting some Vitamin C along with an iron-rich food helps your body to absorb the iron.