I have had a slight increase in my temperature for the last week it has not droped below 99.8 and has been has high as 101.1, I have also had tenderness in my breast, nausea, food smells bad, and some food that i normally eat is just far to spicy, I have had a fluttering in my abdomen and I should have started my cycle today but still have not, I took a home pregnancy test two days ago but it was negative. Is there something serious going on with me or could I be pregnant?