hello everyone.

My ball python (only about2.5 ft long) hasnt pooped in about 3 weeks....I know it's common for BP's to have a few back up problems every so often, but is it ok that its taken this long? I've fed 2 mice since the last time (s)he pooped only because there was a tiny amount of fecal matter in the tank and I didn't want him/her to go too long without food, especially being so small. I have a mouse defrosting right now for him/her because (s)he seems to be losing weight (I dont have a scale yet but I know how to notice a weight difference)...should I feed it to him/her or wait a little longer? It hasn't really been THAT long but I dont want to harm him/her....advice please?