Try not to beat yourself up over it.
You expressed yourself, as you said, you're an emotional guy.
if she doesn't want to be with you anymore.....It won't change the situation one way or the other...whether you had or hadn't cried. So it really is just all about you now.
So, in the future, if unfortunatley something like this ever happens again, maybe try to save the crying until AFTER you get off the phone. But its okay to be expressive too. That's part of who and what you are. But we don't like to beg. Definitely don't do that. But if this is the first time you've had your heartbroken, well, what can I say? Many of us have been there!