Help!! My period was due last Monday and I had cramps and sensitive nipples for a week I felt like I was about to start but never did today I have started spotting a brownish colour I did 2 hpt's and both were negative! I've never been late beore and am really confused? Also my stomach muscles feels like I've done 100 situps (stiff and ache) could all this mean I'm pregnant even though test negative?