I had TL in 2010 got my TR September 5th 2017. Had AF 2 days after surgery. I'm regular and always on time for 4 days. Well this month AF was due October 5th. I spotted October 4th lightly then brown spotting on the 5th then nothing else but bad pain in lower abdomen went to ER and they did test BFN. They gave me pain medicine and I went home. Next day I was fine. Now I'm due for AF on November 2nd. Had a pregnancy test read with evaporation line disappointed I been. Took this test yesterday knowing I'm not pregnant but still evaporation line was there again. What do I need to do?