If you are not together any more than that does not require him to answer you. You apologized and that's all you can do, the ball is in his court now and give it some time and if he doesn't come back around, move on.
yeah, let him cool off, give him space. I've been in your place before and now I know what I did wrong. I would give him attitude then in a minute I'd apologize. all wishy-washy and annoying, the guy just wants to get away from you and stay away. it's a turn off. you don't wanna be a turn-off if you want him back.
Stop trying to contact him for now.
breathe, honey. inhale, exhale. it may be difficult to even listen to advice unless you cool off yourself and most of all give YOURSELF space, too. it will take more than a week but eventually you'll be fine.