Fetal development week by week

Conception See what happens inside you during the conception process.

One month pregnant Your baby is an embryo consisting of two layers of cells from which all her organs and body parts will develop.

Two months pregnant Your baby is now about the size of a kidney bean and is constantly moving. He has distinct, slightly webbed fingers.

Three months pregnant By now your baby is around 7 to 8 centimeters (3 inches) long and weighs about the same as a pea pod. Her tiny, unique fingerprints are now in place.

Four months pregnant Your baby is now about 13cm (5.5in) long and weighs 140g (5oz). His skeleton is starting to harden from rubbery cartilage to bone.

Five months pregnant Eyebrows and eyelids are now in place. Your baby would now be more than 27cm (10.5in) long if you stretched out her legs.

Six months pregnant Your baby weighs about a 660g (1.5lb). His wrinkled skin is starting to smooth out as he puts on baby fat.

Seven months pregnant By now, your baby is more than 40cm (15in) long. She can open and close her eyes and probably see what's around her.

Eight months pregnant Your baby now weighs about 2.2kg (4.7lb). His layers of fat are filling him out, making him rounder, and his lungs are well developed.

Nine months pregnant Your baby is almost due. At birth, the average baby is more than 51cm (20.5in) long from head to toe and weighs approximately 3.4kg (7.5lb), but babies vary widely in size at this stage.

Month by month with ultrasound images See our summary of how your baby is developing from two months. Within each month, interactive 3D ultrasound images give you an idea of how your baby may look.

http://www.babycentre.co.uk/pregnancy-week-by-week#ixzz3sdjsRyzX