Something about cornfields and hovering objects just seems to attract the strangest activity, doesn't it? There's a long history of reports like yours, going back decades.
A few questions that might help narrow things down:
How long did it hover before it moved or disappeared?, Was there any sound at all - even a faint hum?, Did it show any light changes, pulsing or colour shifts?, Did your phone or any other devices behave oddly around the same time?
I'm fairly new to all this myself, based in Manchester, and I've mostly focused on indoor phenomena up to now. But I've been reading a lot about UAP reports lately and what strikes me is how often witnesses describe that same feeling you mentioned - not being able to stop thinking about it. Some researchers suggest that's more than just excitement, that it might indicate something more unusual about the encounter itself.
Worth keeping a written log if you haven't already. Even small details you think are irrelevant - the temperature, how you felt physically, whether animals nearby reacted - can matter when you piece things together later.
Did anyone else in the area report anything? Local Facebook groups or even the UK UFO Sightings database might be worth checking to see if there were corroborating reports that night.
Would be really interested to hear more details if you're comfortable sharing them.