SOLVED. Adult Romance, 3 book series about sisters. Titles are the sisters names I think. Read in last 10 years. [s]

[Donnell Jones]

Sisters are throwing anniversary party for parent but they are estranged. Youngest sister ends up marrying middles ex, oldest is separated from military husband after son goes missing years before, I think the middle sister works with pregnant teens due to pregnancy in college. Parents start out pretending to separate to get sisters back together but end up separating for real for a little while. In the last book the missing son shows back up.

[Brenna]

Sisters trilogy by Peg Sutherland seems to match. It starts with Amy

[Donnell Jones]

Brenna yes that is it. Thank you so much.