Oo, normal yan lalo na kung pregnant ka or nakakaramdam ka ng stress/fatigue, ang appetite mo talaga ay on-off lang sometimes, tapos biglang gutom ulit after a few minutes pa lang, haha. Pero kung patagal na yan and affecting ka na physically (like nasusuffer ang energy mo or weight loss), better check with your OB or doctor para ma-rule out kung may underlying thing like blood sugar issues or something, kasi deserve mo ng proper check-up para mapakayos.