No I haven't because I'm growing my snakes out slowly. Heck I know for a fact that if I let Strudel go as hard as she wanted on her rats she'd hit breeding size in another couple of months, the kid is a garbage disposal, but that isn't healthy for her. However, you can literally google "gravid ball python" and "obese ball python" and get tons of examples of both. I have looked at both for nearly two years, long before I even got my first snake because I want to do things right the first time. Also, if you're actually feeding your girl on medium rats, she should be going closer to every two weeks, not every week. An adult ball python can thrive quite well on a small rat once a week for the rest of it's life.
If you're having trouble on getting your husbandry to a point where it's consistent and your snakes are having that bad of shedding issues, you should be focused on fixing that, not producing more snakes. Everyone wants to jump into the breeding side super fast, but you need to take the time to be a keeper first, and a breeder second.