Can Genital be transferred by Zoster?

I may have kissed someone who has Zoster. And it says it the internet that it is just Shingles? It's only in the body. But now I have a lot of Stoma inside my mouth. It's everywhere. Gums, upper and lower lip and tongue. I went to the Dentist two days ago and she placed medicine on the stomatitis. Is it possible to get in the mouth from swapping saliva with someone who had Zoster? I'm sorry for being too detailed. I'm also thinking this is mouth ulcer or something else. I'm hoping it's not because I heard you can't cure herpes.