Loving My Omega by Mishan Angel

Colton Fisher, an Omega wolf-shifter, took the plunge and trusted his dragon-shifter professor with one of his deepest secrets. In turn, Marcus Alford got down on a knee, pledging to protect Colton from whatever or whoever tried to harm him. As Alpha, Marcus does his best to navigate the often too independent Omega but realizes that Colton will not be stopped once he sets his mind to something.
His pledge is tested when they both find something out about Colton that makes him even more of a target. If his Omega designation got out, more than just his pack would be after him. Except that Colton’s old pack isn’t the only threat that looms over them. Marcus finds out that his designation also puts Colton at risk, forcing them into corners they cannot escape from.

Marcus and Colton are tested as they work through their courtship and pregnancy, family and pack, school and work, love and trust.