11 Weeks

From WebMD:

Your fetus, about the size of a large lime, measures about 1.75 to 2.4 inches from crown to rump and weighs about three-tenths of an ounce. About now the rapid “swooshing” noises of the heartbeat may be heard using an electronic Doppler device. Fingernails and external genitalia are showing distinguishing characteristics, and the baby is swallowing and kicking, although you still won’t feel it. Your uterus is almost big enough to fill your pelvis and may be felt in your lower abdomen. You may also be seeing changes in your hair, skin, fingernails or toenails.

From Baby-Gaga (sometimes a little more humorous take, but not always):

Maybe you’ve noticed… your baby is a super-duper grower! Your lil’ fetus will be gaining a substantial amount of weight this week and has already achieved fruit-size-status comparable to a plum. What’s more, your little scientist is already starting to explore their body, focusing most intently on touching their head, and especially their face and mouth. Their mouth in particular will provide them with hours of entertainment. This happens not only because your baby is gaining coordination, and is therefore able to move a hand on command, but also because their palms have gained sensation and can actually “feel” what it touches.They’re also developing their swallow reflex this week. And lastly, your baby’s smelling and other olfactory senses will begin developing this week, which when combined with the maturing taste buds, will provide your baby with their first experiences of taste and smell.