BroDan,
This may sound unkind but it's something she has been planning behind your back for more than just a few hours, that's why she's been cold and saying very very little for days now. Ensure you get access to your children - that is what your children need and what you need. If you haven't got money for a lawyer you certainly can't afford to fly to Denver every weekend for visitation. You need to spend a little now to get this kind of thing sorted - you'll not regret it for the next decade or two.
Most of all I'm so sorry. However terrible, however sick you feel right now, it may not get better tonight or tomorrow but will get better soon. Whatever advice you need you know we're here 24/7.
mmxiv