findthatbook | Sequel romance novel involving a husband and pregnant wife, husband sis who is th ex of wife's doc

Hi,

I have been looking for this book for a couplE years now,all i remember is that the main hero/heroine had a previous book, h/H are married and expecting a child however they are having difficulties with the fact that they can't make love while wife is pregnant. (Spoiler) they ended up making love though and wife had a miscarriage. It also involves the hero's sister who came to town with her 2 children and met her ex,who happens to be the wife's obgyn.I believe the doc bought a house for hero's sis and they eventually ended u together.

Hope someone can help. Thanks