Hay, mama, that's actually a good weight for 5 months na! Baby's developing nicely kaya wag mag-alala, pero siguro mas malinaw makikita ninyo sa next ultrasound check-up ninyo with your OB, they'll compare it sa growth chart at makikita kung lahat ay on track talaga. A few of my mum friends were worried din with similar concerns, pero ang OB nila assured them lahat normal lang, so definitely bring it up sa next visit para sa peace of mind mo!