Aww, first baby anxiety, yan yan! Honestly, ang baby growth ay sobrang variable lang, some babies are naturally smaller or bigger pa lang, and that's totally normal din naman. Pero since concerned ka, best to check with your OB or pedia para makita nila kung consistent ang growth mo through ultrasounds and regular check-ups, kasi sila ang makakasabi kung okay lang talaga or may kailangan i-monitor. A few of us moms went through the same worry, tapos nag-relax lang kami once the doctor said okay na! Let me know what the doc says, sending you hugs!