I had sex with a condom on 10/24/2012 but we stopped because i began to bleed ..i bleed for maybe a day then it stopped..my official period can on 10/29/2012 and lasted for 7 days or so (regular bright red blood not many clots)...then 8 days later..another period started and the blood has been dark brown..and deep dark red..with thick clots..I stopped using the nuva ring 2 months ago..what could be the issue? thanks for you knowledge and guidance!