Can anyone answer this?

So, I had porn pulled up on my phone this morning. I closed the browser, but didn’t close the tab. When I got to work, connected to my employers WiFi, and I had to open the browser to google something, it reloaded the tab from the morning. 🙄 I closed it immediately, deleted my history, and disconnected from the WiFi. But now I’m worried it logged the site and im going to get in trouble.

Can they even see what I do on my phone while connected to WiFi? What are the chances they will know it was me, if there are 50+ personal devices connected to the WiFi?