In this artificially colored ultrasound scan of the baby within the uterus, the spine shows up especially clearly. The two blue crosses, at the top of the baby's head and at his bottom, indicate where the rump to crown measurement is taken.
At around this stage you may begin to "show," that is, instead of having a slightly bigger waist you develop a definite "bump" and start to look pregnant. You may begin to notice people's eyes are drawn toward your abdomen. If you'd rather keep the pregnancy quiet in some circles-for example, at work-wear baggy clothes.
While some women have neat little bellies positioned more to the front, others have bellies that are more spread out. The size and shape of yours will be individual to you, so try not to compare. There are old wives' tales that if you're carrying in front you're having a boy, and if you're carrying spread out over your hips you're carrying a girl, though this hasn't been proved.
Twin bonding occurs well before the babies are born.
Advanced video technology has captured the special relationship between twins in the uterus. They have been seen to interact and even grasp each other's hands.
It is normal to get the nighttime munchies during pregnancy, but annoying, especially if you're already having difficulties sleeping. Try to preempt nighttime hunger by snacking on the right foods before you go to bed:
Excerpted from Pregnancy Day by Day.
Copyright © 2008 Dorling Kindersley Limited.
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