Omega Teacher’s Secret by Anna Wineheart

Saddled with debt and a crippling self-esteem, Professor Ian McMillan has struggled for decades with his demons. But that isn’t his biggest secret—seven years ago, he spent his heat with an alpha he shouldn’t have… his student.
Nothing should’ve come out of it. Except Ian conceived, and his baby’s father… is also the department head’s son. Under the threat of losing his job, Ian made a choice: keep his child, and sever all contact with Brad.
With no inkling of the baby he left, Brad Saxon graduated from college and joined the Meadowfall fire department, making mistakes along the way. Lives have been lost at his hands, and the guilt he carries is suffocating. How can he protect an omega, when he’s failed others before?
But Brad can’t forget about the omega from years ago—Ian, with his soft smiles and yearning eyes. When Brad enrolls in a Master’s course hoping to see his professor again, he finds something he doesn’t expect: Ian’s in heat. This time, there’s a child with him… a little girl with Brad’s eyes.