There's more than just one thing to worry about your snake catching from a lizard- maybe, for example nidovirus (see below), not to mention pathogens that are as yet unknown. Alas, life is never simple or completely safe. Plenty of diseases that BPs might catch, some lethal, but that's not saying they always will either. So for now, think positive & please TRY not to panic right now. On the other hand, when you're mostly a beginner, it would be better to leave the sick herps to those with more experience, unless you have access to a really good herp vet & plenty of funds. I know you meant well, but yes, "good deeds" can bite you, or your other pets.
https://www.frontiersin.org/articles...21.733404/full
https://www.mdpi.com/1999-4915/12/11/1329/pdf