According to "What to Expect", week 16 means:
Your baby now weighs in at a whopping three to five ounces, and he's four to five inches in length. The bones that are now in place in his ears means he can probably hear your voice as you talk to your partner and pals and sing in the car. While he’s getting used to your voice, the tiny muscles in his body, especially the ones in his back, are gaining strength, so he can straighten out a little more. And thanks to his developing facial muscles, your baby is capable of making a few expressive frowns and squints, even at this early stage. (Don’t worry, those frowns have nothing to do with the sound of your voice!) And his eyes are finally working, making small side-to-side movements and perceiving light (although the eyelids are still sealed). Peekaboo!
Its fun to think about baby being able to see (somewhat) and hear (at least me). Of course, baby will learn that my voice changes.... with the changing sinuses! Its rather nasaly right now, more so than usual.
Speaking of which, the sinuses are feeling better. I've still got some stuffiness and I'm still taking the antihistamine, but I don't feel overly bad. I'm trying to arrange the schedule so I get more sleep, as that always helps me feel better. The power naps aren't doing much right now.... it takes me 5 to 10 minutes to drift off, and after 10 minutes I'm rather groggy. I'm sure I'll get the hang of it, but I'll work to do that when I'm feeling more on top of the game. For now, I will work to get the 30 minute to hour nap.
I did realize that I've been pushing myself too hard. I got a small cold sore on my lip (which has healed up rather quickly, thank goodness). That's a stress signal.... must slow down... a week off will help.