Nasty metallic taste in mouth 3 dpo

Shelby
I know it's pretty early to think anything but this morning, I woke up with a bad metallic taste in my mouth. I thought it was just morning breath, but after brushing my teeth 3 times, drinking water, gum and eating it's still there. Super annoying. Anyone else experience? Early pregnancy symptom of am I just crazy? Did anyone experience this during your 2WW? I am currently only 3 dpo.