Unusual bleeding?

Hey Ladies,
So my last af was 17th-20th July and the on the 12th-13th of August August I spotted. I was due for af on the 19th of August And on the 23rd of August I start to spot leading into a light bleed, it is now 9 days later and I'm still lightly bleeding. 
I'm just wondering if anyone has heard like this before. I have had slight cramps off and on.