I echo the other posters here by saying that bloods don't poop very often. Between her second and third year, my female went nearly a YEAR without pooping, all the while eating on a 10-day basis. She grew an incredible amount during that time in overall size. I think most of her food energy was spent in growing.
Since then, she's defecates on a regular basis of about once a month. I didn't change anything in her temps or humidity during the non-pooping period or now. So, I think she just didn't feel like going. Then, finally, bammo.
I keep my hot spot around 85 and humidity at around 60%. I also thaw the rats I feed her in hot water, so she's getting hydration that way as well as the water she drinks from the bowl.
Good luck--your's WILL go eventually. If you can stomach another poop photo, here's what mine is usually capable of every month...incredible.
