Cancer in our 30's

Hi all, was hoping for some advice. My spouse was just diagnosed with a rare form of cancer (we still don't have the final pathology/type however). I do have a couple policies through my employer, but of course I'm now worried that I could potentially be laid off and have no way of securing other insurance now that he has this diagnosis. I know Aflac offers small policies for cancer patients, but I'm not 100 percent sure if that would be the best route, or if I'd be able to secure multiple smaller policies through different companies?

Thanks