Question about basset butts

So I’m a bit of a hypochondriac so I’m sorry if I’m being completely insane. But I’ve noticed these bulges under both my boys butts, they may have always been there I’ve never really looked at there butts before, but I noticed and now I cannot stop freaking myself out that it’s something terrible. they haven’t paid any attention to there butts like pooping normal no scooting or licking of it. We r going to the vets in a couple weeks just for normal checkup and shots so I will bring it up there, but for the time being I’m just freaking out, so is this abnormal on bassets, or do they just got fat butts?