Ok, refresh my memory, you're divorced but still ironing out the parenting agreement?
If (or hell if not for the matter) scheduling should have had a loosely put paragraph afore the "rules" and after stating that it is understood that as lifestyles and needs of the kid(s) change that certain flexibility is entrusted to the parents withing reason to agreement for the well being of all parties. Something to that effect.
Umm, so, other than the fact you told her of the event, I do remember you mentioning it here, what's the big deal in the first place?
Why don't you take him to the meeting on Saturday and allow your X to keep him an extra night or pick him up on Friday of her next weekend? Or simply take him dinner or something during the week for a few hours to "make it up"? I certainly won't swap days, my X knows that, and thus this practice HAS worked thus far.
Just an idea. Another idea (more like recommendation), go into a soundproof room and let it all out brother, you're gonna drive yourself to the cardiac unit getting all worked up. There should be NO arguing when it comes down to the kids, you're right about that. But I think the BOTH OF you need to think outside the box a little more.
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11