I Had A Uterine Ablation Performed Around 6 Years Ago.

I had a uterine ablation performed around 6 years ago. A couple years ago I started having light spotting for my period, usually just when I wiped. It has always been a healthy red color. This month when I wiped, it was a brown color. I wasn't too worried as it was the first day and would probably turn back to red. It is day 4 now and it is getting to be an even worse color of brown. I have no pain other than normal cramping and no weird smell. I am 36 years old.