Aww mama, totally normal yan! At five months kasi, ang movements pa ay napakahina-hina and subtle pa lang, parang bubbles or light fluttering lang, kaya madali mong mamiss lalo na kung first time mo. A few of us tried placing our hands on different spots throughout the day and that's when naramdaman namin, honestly it was such a magical moment! But I'd say check with your OB during your next visit just to be sure everything's good, especially para sa peace of mind mo as a first-time mama.