Summer Island Hope by Ciara Knight

Business tycoon, Weston Knox, focused on his career avoiding marriage and family since his mother died in childbirth until he met Kathleen. Now, he wants nothing more than to sweep his soon-to-be fiancé off her feet to live on private islands in exotic locations until he arrives to find her so ill she can barely stand on her own.
Fit, fabulous, and fifty make Kathleen Stein’s life perfect, especially since she’s about to marry the man of her dreams-a workaholic with no desire for children-when she discovers she’s pregnant.
Together, they must learn to navigate through fear of family, a high-risk pregnancy, troublesome family, friends, and a mischievous ferret to find their new happily ever after.