24 weeks.

• The baby is growing steadily, gaining about a quarter of a pound since last week.
• Since its' almost a foot long, that makes for a pretty lean figure, but its body's filling out proportionally.
• The baby's brain is growing rapidly, and its taste buds may be working now.
• Its lungs are developing "branches" of the respiratory "tree" and cells that produce surfactant, a substance that helps the air sacs inflate easily.
• The baby can hear more now, and I may even notice her startle at loud, sudden noises. But its probably getting used to the regular noises it hears around the house, such as my dog barking or the roar of a vacuum cleaner.