yea, that does seem like a while. I would play on the safe side and see what a vet says about it. (of course, make sure they know about the bloods expected pooing schedule just so they dont flip out)
[edit]
Did a quick search on vpi and this is what I found
http://www.vpi.com/mailbag/2006/10/i...on_constipated
I have never seen a constipated blood. It might happen, and maybe this is what yours is doing , but I doubt it. We regularly have them go 4-6 months without defecating when they are about 1-3 years of age. Why they don't defecate often at this age, I don't know--but they don't.
If you need for her to defecate, then "swim" her--put her in deep warm water (maybe about a foot deep) and make her swim. Don't make the water too warm, about 83-87 degrees F will do nicely. Don't leave her unsupervised and don't leave her in the water for more than five or ten minutes. Usually a blood will decide to defecate in a few minutes. But I wouldn't worry, and I wouldn't bother. DGB