Metal taste starting at 3DPO

Maranda • TTC w/ IBD & Fibromyalgia
Is this even possible? Food has been tasting so weird and I have this metallic gross taste in my mouth. I didn't think you could have pregnancy symptoms that early so maybe it's progesterone? It's not a normal post ovulation symptom for me. I am now at 4DPO today and it's still there. Yuck!