I'm sorry you've been through a tough time lately.
But yes, it could be a sign that he wants to break up. It's quite likely that he was already considering it and then when you pushed him away, it was all he needed to make up his mind. I think you also should realise that telling him that you needed time out isn't so much about hurting him - it's a demonstration that you're not solid in the relationship. People who are meant to be together pull together when times are tough - they don't push each other away.
What's your relationship like? How much time do you get to spend together? In short, is it meeting his needs for 1:1 time together and physical affection?
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.