Little by Little Together

Pregnancy week by week · Second trimester

17 weeks pregnant: what's happening

Soft fat is beginning to form beneath your baby’s skin, while the umbilical cord continues to provide nourishment and support. Your center of balance may begin to shift as your baby grows. Remarkable changes are taking place for both of you.

What's ahead

In the weeks ahead, your baby's hearing will continue developing, and familiar sounds like your voice, heartbeat, and everyday routines may become part of their growing world.

A memory to keep this week

Your first maternity outfit

Write it down while it's fresh. In the app, each week has gentle prompts like this one, saved privately to your story.

In the app this week

Try this together: Design Baby's Space, plus this week's memory prompts, a private journal and your Journey. One simple idea at a time, never 47.

Become a Founding Mom   Join the launch list

Based on: NHS week-by-week guide to pregnancy, written in Brittany's words.

Every pregnancy and every baby is different. This is general, educational information, not medical advice. If something worries you, check with your provider or pediatrician.

The blank baby book that started it all

Meet our founder

Brittany Ryan

Founder and Mom of Two

Brittany is a mom of two with a background in early childhood development. Little by Little Together began with a beautiful, blank baby book. Like so many parents, she bought baby books with every intention of filling them; instead, they sat in a closet while life kept moving. So she built a personal assistant for parenthood that tells you what matters right now, offers one simple idea at a time, and keeps your story safe.

“You don’t have to remember everything at once. Little by little, there is a story worth keeping.”

Read Brittany's story

Founding 500 · applications open until Mother's Day 2027

Help shape the app as a founding mom

Open to moms and expecting moms across the US. Brittany reads every application; selected founding moms get Plus access. Fields marked * are required.

Agreements

Want to add a short video hello? Apply on the full page. Privacy