Menstrual after miscarriage

So I had had a miscarriage on 6/8 but I was still taking my meds until my US on 6/14. Once it was confirmed on 6/14 I discontinued my meds. I bleed from 6/16-6/20/6/21ish. Around 7/4 I wiped and there was brown discharge then nothing same thing happened last week and today. It’s always a one day thing then it stops. Any idea what’s going on? I took two test last week a few days apart and they were negative. I don’t want to get on medication to induce a period because my periods are prolonged and I’m hoping this may make them normal. Suggestions? Thoughts??