I was 11 days late on my period this month and when it came it was light, lighter then normal and before I began bleeding I was experiencing pregnancy symptoms fatigue, always peeing , sore breast , minor cramps, food cravings etc , all of my HPT came out negative , I just recently learned my grandmother && aunt both bled during their pregnancy's the way I did , am I pregnant ? is that hereditary ? They didn't know they were pregnant until they got a blood test.