If he tells you he needs time and space to work things out then why wait? If he's leaving you with the impression that there's a real possibility you can get back together, the sooner he gets started the sooner this can happen.
I understand your emotion (below);
"i pretty much begged him to give us another chance"
these feeling happen to people in love but I think your mistake is (below);
"but i thought about it yesterday, and last night i told him when we get back"
Relationships are never 50/50 but they can be more or less equal as long as one partner isn't needy and dependent on the other. If this describes you, you will always be on the receiving end whether it's with him or someone else. I know this is easy from here but give him a sense of your independence, assure him your life will go on just fine no matter what decision he makes. This will help you especially if you find out his time and space has other names such as Kim, Catherine or Nicole. I feel your pain and I hope this helps.