Panicking yellow discharge!

I will be 6 weeks pp on Tuesday'. I started getting yellow discharge around 4 weeks, my bleeding went to red to pink to now yellow. I thought maybe I had bv so I used metrogel which always works and even took probiotics. Nothing has stopped the yellow discharge. I will be calling my doctor Tuesday to check and see if this is normal.

I'm so afraid of a uterine infection. Is this normal?

Please help.