Black blood in period. Than 2 pictures.

1) I'm getting black blood in my period. 2) I was sexually active but with only one partner and it's been 1 year now I haven't done anything. 3) I'm facing this problem from almost 7-8 months now. 4) My periods are normal. They're regular and there's no pain or any smell. 5) Black blood usually starts on day 3. 6) I've done all the tests and everything is normal even the ultrasound. Only my iron is on the lower side. 7) I also have a heavy white discharge problem. But the texture is okay and there's no smell either. 8) I get white discharge before and after my period and I wear panty liners for this problem. 9) I keep my area very clean and wash it Atleast 2-3 times a day. 10) There's no itching. 11) Even though everything is normal I'm still getting the black blood in my period. I just want to know if it's normal or not. I've attached my ultrasound report below. I couldn't attach more than 2 pictures. Thank you