Hey mama, I think you mean bitter taste sa mouth, right? That's super common, lalo na kung pregnant ka or postpartum, a few of us sa group namin experienced it din and it's usually hormonal or sometimes from anemia or medications, kaya best to mention it sa doctor mo para ma-check. In the meantime, try sour candies, citrus drinks, or even ice chips to mask it, and make sure kumakain ka ng iron-rich foods kaya naman you might want to check your hemoglobin levels din!