I Had A C Section 6 Weeks Ago. After I

I had a c section 6 weeks ago. After I stopped bleeding around week 3 I noticed the discharge that came out had a foul smell. I thought it would go away by now but it still stinks. It smells fishy. And I never had this problem before. I don't fee like I have an infection of any kind. Is this normal and if so when will it go away?