If I read this right... You're saying that you felt something wrong? Is that right? If so... I would suggest you do a cleansing of your house then - what you're describing sounds as if you're picking up on a dusting. Dusting is the practice of taking a powder form of a spell, often times a hex or curse, and leaving it on the doorstep of the person you're doing it against. If it is a dusting, basic sweeping could possibly/easily/maybe get rid of it.
Also, though, you could simply be having paranoid feelings based on things you're seeing in your everyday life. If you're experiencing problems with a person you feel might have feelings against you, it is possible you're simply feeling paranoia about such a person.