SOMEONE PLEASE HELP problem with psn linked accounta

First time ever on a fourm. Super desperate. I’m just trying to link my ea account to my psn but it says it’s already been linked which I don’t even think I did. I got this message:

Your accounts can’t be linked because your PlayStation™Network account Yahmanachi already linked to your EA Account for db*****@disabled.ea.com. An EA Account can only be linked to one PlayStation™Network account in its lifetime.

why is it a ea domain.

thanks.