And while I understand not wanting to stress out a new snake, IF there is a health problem with a snake you just got & if you expect the seller to make it right (they shouldn't be shipping you a sick snake!) then you have to take it up with them IMMEDIATELY, otherwise they'll say that the illness was on your watch & therefore not their fault to make right. How long have you actually had the snake? (in days)
Another suggestion ("water under the bridge" at this point): New snakes are best kept in similar housing to what the breeder (or seller) did, at least while they're in quarantine: they'll be more likely to eat for you (esp. BPs, since they're very shy), but also, putting the BP in a large enclosure with lots of clutter can be a total nightmare IF your snake also came with mites, as they'll be very hard to see this way. Minimal furnishings (hides & water bowl) on white paper towels for substrate are the best while you're still assessing a new snake...mites will show up on white paper towels easier, also other issues like bloody stools or other symptoms of a sick snake. IF this snake does have mites, you'll now end up throwing away all your lovely decor (except for plastic hides & bowl, which can be cleaned adequately) but more to the point, snakes can be killed when mites reproduce exponentially (as when they've been hiding in the decor). I HOPE this doesn't happen, but it's something you need to be aware of...especially when going to all the trouble to set up a nice bioactive enclosure.