Hi saggirl1125,
Welcome, I just wanted to say I think you did the 100% right thing by calling the police. You were protecting the children, and people out there on the streets from a real danger, that danger just happened to be your SO. Do not let it get twisted by him and try not to feel guilty. You potentially saved his and/or someone else's lives by making the call. Imagine how you would feel if something tragic would have happened and you had not made the call?
Sorry I don't have any experience with this but just read this and had to post. As a member of the wider community I thank anybody who makes the call to report drunk drivers, you did the right thing.