Should I be worried if I am a women who is pregnant with gestational diabetes?

Follow advice. You should follow your obs advice on lowering your blood sugar, including proper nutrition and medication if deemed necessary. Mothers with gestational diabetes are at increased risk for complications during pregnancy including large babies, complications after birth, and a possible increased risk of stillbirth. However, with proper management and care, you can have a perfectly normal child.
No worry - plans! Gestational diabetes can cause adverse perinatal outcomes such as macrosomia, cesarean section, shoulder dystocia and fetal demise, however most affected pregnancies have normal outcomes. Consult with an mfm/obstetrician to control your diet, increase exercise and consider Insulin or Glyburide for therapy. Monitor fetal growth and amniotic fluid volume closely!