Help ! is my BP constipated ??

[Tingya]

My 2 and a half y.o. ball python used to poo after a week that she had eaten, but that was during her first year, then she it started being 2 weeks after, now recently, she ate 3 weeks ago and still hasn't defecated, last month it was also a month later that she did.

Anyway, maybe that's normal, but I'd like to have some suggestions...

Also, I read in a book that her stools shouldn't be watery, well it is, and it isn't one solid white part and one solid black part, first, it is white-yellowish-watery-"jelly like", and then she doesn't discharge the black part for more than a week or so.
She's had this kind of yellowish discharge for about a year (i guess), i thought it was normal until i read in the book that it shouldn't be that way. What do you think ?

Thank you ...