I tend to agree. I don't know about the bulge, but I've frankly never seen such a fat boa. Snakes tend to build fat deposits around the base of the tail and I think this is what's going on with her.
Boas should have a slender, squarish appearance - they are not as heavey-bodied as BPs.
How often are you feeding her? Boas tend to do well on a 10-14 day feeding cycle. She appears young, but I would cut back on her meals, lol. Not intended to offend! She looks healthy in every other way. And boas are garbage disposals so she may well be acting hungry all the time and fooling you into feeding her.![]()