Am I leaking amniotic fluid?

So im 35 weeks pregnant. As of monday I have been getting a lot of clear odorless discharge. It has no smell to it either. I asked my doctor and he said to call if it became irritating to the skin or started to smell. Its been 3 days and im still constantly leaking something and my underwear constantly feels soaked. I started to put a paper towel or napkin down there and notice that sometimes it has a tint of yellow to it but mostly is clear. Should I call my doctor again?