The Book Spot in Round Rock, Texas will have copies in by late August. Visit them or call for it. They are also hosting the book launch on Oct. 15 at 3 p.m.
Indie Bound has it listed finally (although without the cover yet), but you can follow that listing to an independent bookstore near you.
Barnes and Noble has it in stock in their online store and is shipping now.
Amazon is having trouble keeping it in stock, but they have it. (Discounted to $11.66 last time I checked.)
Amazon UK also has it if you live there.
If you want a copy signed by the author, you can order it through the publisher, and I will get the dedication or inscription to write inside before it ships. Signed copy through the publisher
The publisher also has a discount program for baby loss web sites to sell copies as well as hospitals or support groups who want to order five copies or more. Email them for details.
DRM-free at Goodreads for Sony, Kobo or other e-readers
Apple iBooks for iPad/iPhone