You should go to the dentist, may be a abcess starting or an infectious tooth.

Is there a possibility thar ut pregnant? Cos this is a common side effect

Well just keep some mints with you until you see a dentist. Im a mint freak. Me and jose have like 4 packs of gum and mints all the time. And I brush my teeth like twice everynight because I love the minty fresh taste. It could be pregnancy if a female. But im not sure.

I've been chewing gum all day and the taste won't go away. Gum and brushing my teeth won't help. My teeth don't hurt should they if it's my teeth??

Oh. Well im not sure, it could be an infection. You should call your dentist and just ask really quick. Shouldnt be too bad.