Mouth tastes so BAD

Y'all I'm almost 10 weeks now and like 4 days ago this gross taste has started in my mouth and it won't go away even after I brush my teeth😫 only thing that helps is if i eat something or chew gum or mints but as soon as I'm done it comes back! Idk what's causing this or what i can do to make it stop but someone help 😂 this is so gross lol Has anyone else experienced this?