LOL, right? ??
Which kind of cache was it, specifically? Might help us tell others where to look.
My host is SiteGround and they have their own cache system called SuperCacher, but I’m pretty sure it’s similar to other hosts. It had three parts: Static Cache, Dynamic Cache, and Memcached. I flushed them all and that fixed my issue. Not sure which of the three did the trick or if all were needed. I wasn’t thinking scientifically at the time. ??
For other Siteground users, SuperCacher is located on the cPanel under the Site Improvement Tools section.