could i be pregnant please help):

crystal
according to this I am 10 days late and my ovulation day is weds lately ive been very tired and sleepy and started being very sensitive. i feel bloated almost all the time. and sometimes feel light headed. kind of feel like throwing up sometimes. but had 4 hpt negative. and i started spoting a little pinkish srry for the tmi? but could i be ? help please