Answer: am also 6 1/2 - 7 weeks along. The same thing happened to me. Sometimes light brown, sometimes dark brown blood on the toilet paper after using the bathroom. I was hysterical and called the Dr. She told me not to panic...this is very normal and explained that between 6-10 weeks, the placenta is attaching itself to the uterus, and not uncommon for OLD blood (brown) to be released. She said no reason for concern unless it is red, heavy bleeding like a normal period. It usually lasts for a couple days or so, and stops on it's own.