What Was The Brown Jelly Like Vaginal Discharge?

Hi, may I answer your health queries right now ? Please type your query here. I had my perios 3 weeks ago, it was 2 days early but a normal period. 2 weeks later I have stared getting a brown almose black jelly coming from my vagina this has been happening for 10 days now. I have also had severe lower back pain and a pain in my right groin..