I am 37 year old, took the mifegest kit 2 weeks ago. I had heavy bleeding from day 1 I took the meds and it stop after 6 days, and again comes back few days spotting and brownish blood. Today morning on my almost 3 weeks from taking that pills, I took pregnancy test, result is positive. Breast also still sore. Please advise if still im pregnant or when is the possible weeks it becomes preg test will becomes negative.