I just purchased this snail last night and it’s been on the side of the tank for the most part until I just came home and found it on its back like it fell off, so panicking I turned it right side up then noticed it had some white spots on its shell that I didn’t notice in store and I just want to be sure it’s not a parasite and if it is, then how to treat it. And it was producing some rather stringy excrement that was stuck to the glass and waving around but I can’t find any info on it :/ so any help at all would be appreciated!