How well do you trust the person you bought her from? She sure has all the signs of being gravid (just based on the pic). If you felt something it really can only be one of 2 things - eggs or urates. Either of which could be stuck in the pipe.
I would normally suggest soaking her to help try to "move her along" but since you were dealing with scale rot I would suggest a vet trip as a safer alternative. (This assumes you don't care about any potential eggs)
Have you seen her poop yet?