My last cycle started 8/25, my bf and I were pretty active from 9/1-9/4 with no protection. I am now 11 dpo and have had off and on light pink spotting since 9/14. I have a regular 27 day cycle and am due on 9/21. I got a negative result this morning, but have been having a few symptoms, such as fatigue, mild cramps and headaches. Confusing as ever since these can be signs of menstruation as well. Do I spend money and buy more tests or can I trust the result I received.