As you move deeper into the third trimester, the anticipation builds. Your baby is reaching the final stages of maturation before birth, and you might find yourself overcome with a powerful instinct to prepare your home for their arrival.

During these weeks, your baby's main focus is on gaining weight and getting ready for the outside world. Their lungs are one of the last major organs to fully mature, producing a crucial substance called surfactant that will help them breathe independently after birth. Their bones are hardening, though the skull plates will remain soft and separate to allow for an easier passage through the birth canal.

Sometime during this period, most babies will settle into their final, head-down (vertex) position, getting ready for delivery. Your doctor will monitor this at your appointments.

For you, the physical realities of carrying a nearly full-term baby become more pronounced. With the baby taking up so much space, you may experience shortness of breath as your lungs have less room to expand, and heartburn as your stomach is pushed upwards. Eating smaller, more frequent meals can help with both.

You might also find yourself filled with a sudden burst of energy and an overwhelming desire to clean, organize, and prepare your home for the baby. This is famously known as the "nesting instinct." While not all women experience it, it's a common and powerful drive to create a safe and welcoming environment for your newborn. It's a productive instinct, but be sure not to overexert yourself—listen to your body and accept help when it's offered.

This is also the perfect time to finalize your birth plan. A birth plan is a simple document that outlines your preferences for labor and delivery. It can cover things like who you want in the room with you, your preferences for pain management, and your wishes for immediate postpartum care. It's not a contract, but a communication tool to help you, your partner, and your medical team be on the same page.