For the last 2 weeks I have been feeling very bloated to the point that can barely button my pants but I'm not really constipated, I have also been feeling cramps, sometimes nauseous after I eat, moody, nipples a little sore and instead of my regular period have this weird spotting for the last 24 hours. I don't need any tampons or pad just when I wipe there is some pinkish or brownish blood. But had a negative pregnancy test 6 and 3 days ago. Could I be pregnant?