So this is embarrassing and TMI

Does anyone else’s discharge have an odor ? I’m 4 weeks pp and everything looks good, and I feel normal but when my discharge comes out it’s a strong unpleasant smell like really old blood I guess you would say? I stopped bleeding at 2 1/2weeks and I’ve just noticed this the past 4 days maybe it’s come back (brown more mucous looking), and it’s Yardley any discharge at all. I go to the doctor on the 26th was just curious if anyone else has experienced this or if I should call my doctor.