Aw, first time mama! Honestly, every pregnancy is different, a few of us sa group namin had small bumps the whole time and that was totally normal, pero since you're worried, it's best to mention it to your OB sa next visit para ma-check lang if baby's growing okay at lahat ng measurements are on track. Don't stress too much though, kasi some moms just carry differently, lalo na pag first time at maybe closer sa ribs ang baby mo, pero peace of mind talaga worth it na pag-check with your doctor!