Is the increased secretion in the late stage of pregnancy amniotic fluid?

Patient's question:

Hello, I am in the late stage of pregnancy and have a lot of discharge, which I'm worried might be amniotic fluid. Is an ultrasound still needed to check if it is amniotic fluid? If it is, is it serious? Thank you

Doctor's answer:

Okay, here is the translation following your instructions:
Test the discharge; this is sufficient.
First, you must maintain a positive and optimistic attitude.