Hi Baby weight at this stage is normal. Normal vaginal delivery depends upon various parameters. Your doctor will conduct a per vaginum examination around 36-38 weeks to assess the status of your pelvis. Baby weight is not the only criteria to say if a vaginal delivery is possible.for people with a short height and a narrow pelvis,a 3 kg baby will have difficulty in passing trough the pelvis. In females who are tall and have a broad pelvis,babies as large as 4.5 kgs are known to be delivered easily. A trial for labour(vaginal delivery) is always given if the baby weight and your pelvic diameters are adequate. In case the baby passes meconium during pains,it is an indication for emergency caesarean. Or if the baby s head doesn t get engaged,a caesarean must be called for.these things are best left to your obstetrician,trusting himmin the fact that he will do the best for you.