Licked his butt hole

My fiance, because his friend told him it felt good, asked me to lick his butt hole the other night.. I resisted at first but did it eventually very briefly and there was no 'eating' of his ass. Just a tongue over the hole.

Anyway, this might be a stupid question but, he had C diff last year which is an intestinal infection that is transferred through infected poop getting in your mouth. OR licking an infected butt hole!!

Could he still be carrying this even though his symptoms have gone away?? Could I have gotten it? My stomach hasn't felt right and I'm wondering if it was the food we ate, or if this would be possible.

~Just to make everyone aware, he took a shower before this happened or I definitely would've said fuck youuu~