Week 27

Fetal development in pregnancy week 27:fetus in seventh month

Your not-so-tiny-anymore brilliant baby(about 2 pounds and 14.5 inches long!) is slowly rotating in preparation to “head out.” Obviously, this doesn’t happen overnight, but when you start to feel an unfamiliar pressure on your cervix, you’ll know you’ve got a fully flipped baby locked and loaded for the countdown to their birthday! Even now, at the beginning of the third trimester, their little lungs are already capable of breathing air while the pulmonary vascular system can provide sufficient gas exchange and the central nervous system can generally regulate rhythmic breathing as well as their basal body temperature. For what it’s worth, at this point in a healthy pregnancy a premature child (with intensive care) could easily win on the show: “Survivor: The Early Years.”

And how's mom doing? You’ve worked hard, done your research, endured a plethora of joyless symptoms and would like nothing more than to have wonder-baby on the outside. Well, dig in for the final endurance round and say hello again to the familiar but not-so-lovable faces of fatigue and nausea. You guessed it, the dratted hormone factory is once again running at full-tilt (and causing rapid hair growth), sigh…. Your (“yaaaawn”) fatigue stems from several factors, including the proverbial weight gain, shortness of breath and of course, sleep deprivation. (See week 29 for tips on how to alleviate fatigue!).

Yes, ladies, you’ve finally reached the infamous “live-on-the-toilet” stage. Your feet are bigger, your breasts are bigger, your belly is bigger, even your baby is bigger—and something’s gotta give. Annoyingly, nature didn’t choose your butt and instead opted to compress your bladder, which is now being completely squashed by your-super-sized-baby... all day long. So your best shot is to just accept the fact you’re going to need to urinate every 10 minutes (and if you manage to go longer, thank the good lord).

Of course breast tenderness is also very common at this phase as milk production is kicking in. Other thrilling third-trimester symptoms include more swelling (known as edema) and feeling like you live in a sweat factory as a result of increased basal body temperature. Thank your baby: this temperature increase stems from their body heat coupling with your own, which of course all adds up to one hot mama!

Just in case you don’t have enough things to stress out about: we’d like to remind you the third trimester is really a time to kick your baby-on-the-outside preparations into high gear: baby-proof the home or apartment, buy a car-seat, get a stroller, dress up the nursery and plan a space for diapering, keep mulling over possible names, and try to enjoy this time… when you’re not nauseous, constipated, running to the toilet, or just plain wiped out. (And don’t forget to get your sleep, be active, and eat well! Phewee! we're tired just thinking about what you're going through!)