hi...
last month i was 8 days late. same thing as you with the spotting brown stuff, sore big boobs, no aches. But i got them on day 8. It could be that you are pregs, its a good sign but also could be anything like stress. Husband and i have been trying for babies for 2.5 years and last month i though finally. I think my head was seriuosly wanting it to be and somehow delayed it. Have you been trying?