80 mg/dl Blood sugar

Hi po. Im 29 weeks and 2 days preggy. Ask ko lang po. One hour after meal po ang result ng blood sugar monitoring ko po is 80mg/dl. Normal po ba yun? Or below normal? Thanks po sa sasagot. Nagulat lang po ako kasi biglang baba kasi nung nakaraang araw nasa 90mg/dl to 110mg/dl lang ang average blood sugar ko then now biglang baba ng 80.