5 weeks post partum

I'm still bleeding ...I had a c-section but I'm really wondering if it's from having sex at 4 weeks pp..because my doctor said everything looked good and I was healing.. I cant remember with my first how long I I bled.. but I know I waited wayyyy longer then the 6 weeks for sex lol I was worried ...but anyways I'm just wondering if still bleeding bright red blood is normal?