Questions about flight path

Hi flight aware experts…
I was on United 1912 2/22/20 and I have no knowledge of flying, as a matter if fact am a very nervous flier but do it because of its reward. Can someone look at the flight path and tell me what that loop in Florida is all about. I noticed we were in a big circle but didn’t want to think about it too much.

Thanks a bunch!!

I’m no expert, but it looks like the aircraft probably had to hold that position until ATC could fit it in on its route. Nothing to worry about, just traffic management.