Hello Halley and welcome to BellyBelly!

This is a very difficult question, and one which really needs to be answered by a health professional. If your doctor feels you or your baby's health may be at risk but you are unsure what you want or need, I would most definitely seek a medical second opinion.

You are right in that ultrasound estimates can be off the mark sometimes, but again, you and your baby's health is most important here.

All the very best and please do let us know how you go!