The first 72hrs are the worst then he should start feeling better slowly after that. Make sure he stay hydrated.
What are you doing for youself? Holding in the feelings of betrayal and hurt will eat u up inside. Plus the trust issue. Probably feeling like u just been hit by a mac truck. You will get better in time but remember just cause he has detoxed doesnt mean he is cured he can relaspse and end right back where he is now. IT happens so fast. Educate yourself we understand how you feel. (((hugs)))