So on my first playthrough luckily I walked back through the cave and then got the pop up of the Pestilence outbreaks, on my second playthrough/realm I was being all about speed so ported to town after the conversation.
I looked at my map looking for where the Pestilence was- it was nowhere. Was confused for a bit until thought about how common this quest breaking event is. I had to port pack and walk the cave. Especially with free teleports in the next patch I hope you guys test so new players do not break their quests because they teleported instead of taking the path you thought they would take.