Blossom end rot or something else?

[schmoopie]

I have a couple of tomato plants (cherokee Purple and Juane Flamme) that have something going on with a handful of their fruits. It starts out with some light brown spots/speckles on the blossom end, then the area around and between the spots turns light brown then gets progressively darker. It doesn't really look like the photos I've googled of blossom end rot, but maybe it is? I'm a new gardener so I'm just not sure. Any insight would be appreciated!