If this is the first time you are having abnormal sugar profile, consult obstetrician who in collaboration with diabetologist
would advise you diet modification to suit your pregnancy
requirement. As far as blood sugar levels are concerned according to WHO criteria your fasting sugar is in normal range but your 2hr PP is raised. If your sugar levels were not checked in early part of pregnancy, get your blood test- glycosylated haemoglobin
done. After 2 weeks of diet modification repeat blood sugar is done and management accordingly.