Week
Week 39
Each baby is about the size of a small watermelon this week
- Weight each
- 3288 g · 7 lb 4 oz
- Length each
- 50.7 cm · 20.0 in
What's happening this week
Everything is finished and ready; they are simply waiting now, tucked in as close as three can be. Their lungs keep brewing surfactant right up until that very first breath.
Very, very few triplet pregnancies reach this far — delivery would normally have happened well before now. Think of this week as a friendly bit of context rather than something to expect.
Three little wonders this week
- Their lungs keep making surfactant right up to and even after that first breath.
- A fresh new layer of skin is quietly forming underneath, which is why newborns often peel a little in their first weeks.
- They're barely growing longer now — any growth left is mostly extra snuggly weight.
The triplet twist
This is the week a singleton pregnancy is considered fully cooked, and most solo babies arrive. For triplets it's well past the finish line — this page exists purely so you can see the comparison.
Something to look forward to
- Next week is the singleton finish line, included just for comparison.
To Mom:
If you're still pregnant today, that's one more day of three babies getting stronger because of you. That's love in action.