When She Wishes by Ruby Dixon

Payton needs help on her farm. Heavily pregnant from a one-night-stand, she can’t manage all the manual labor and is supposed to be on bedrest. An alien man from a cat-like warrior race arrives on her doorstep with an offer to work for room and board. Bodhrri will get to stay on the planet, and Payton will get an extra pair of hands to help out until her babies (yup, plural) are born.
Tiny problem – he’s the father of her unborn children and he had no idea until now she was pregnant. Is this a secret baby plot?
(No, it’s secret BABIES.)