Amy, I think you need to contact your divorce attorney to have him/her explain your order. It would depend on how it is worded.
To the best of my knowledge (and I'm not an expert on this), the pension payments you both receive are part of the property division. Alimony is support that is completely separate from the property division.
Now, it's possible that your order ties the amount of alimony, in some way, to the amount of pension payments you are each receiving. I don't think that is how alimony is normally ordered, but again, I'm not an expert in it.
I think you need legal advice from someone who can interpret the terms of your specific order.