Their Own Little Miracle by Caroline Anderson

A surrogate mum –  and then she fell in love…

When Dr. Iona Murray agreed to be her sister's surrogate, she never imagined it would lead her into Dr. Joe Baker's arms. Joe had no intention of ever being a sperm donor again, or becoming emotionally attached after his painful divorce. But when he meets Iona, his boundaries become truly blurred. Will they be able to give up their baby…or each other?