Thanks for the query.
Usually the mode of delivery can be decided after reaching the term only.
As you had previous normal delivery, this time after considering the maternal, fetal and pelvic factors doctors will decide whether vaginal delivery
to planned or cesarean section should be planned.
You can ask for cesarean delivery, but anesthetist and obstetrician should be satisfied that it is better for your health compared with vaginal delivery.
Maintain thyroid hormonal
levels within normal limits from the beginning of the pregnancy
that essential for the uneventful pregnancy.
For more details you can ask me through: http://www.healthcaremagic.com/doctors/dr-sree-gouri-sr/63429