if you are eight weeks pregnant Then, the organs of your twins will develop at breathtaking speed (this is called organogenesis). The hearts of the little ones divide into a right and left chamber and hit about 150 times a minute - that's about twice as fast as your own heartbeat.
From now until Pregnancy Week 20, your twins will grow fast. Body parts created in the first few weeks (such as the liver, kidneys, and brain) become more and more branched and complex. At the moment the tooth buds and the palate are created.
The skin of your twins is as thin as paper, their veins are clearly visible. All organs, muscles and nerves have started to work. Your babies now have wrists and feet start to shape more clearly. The small eyes are now covered by eyelids.
Pregnancy also changes your body. It may be that your breasts have grown and you need a larger bra that supports your breasts better. Also, your waist widens and you may have to pack away your favorite jeans by next year.
Learn how to eat healthily so your twins get all the nutrients they need to develop well. If you are plagued by morning sickness and can not get through a whole meal, try to take small, healthy snacks more often.
Experts believe that every baby develops differently - including in the uterus. Our pages on fetal development only give a general overview. So do not worry if the actual size and weight of your child is different from ours.