I am 14 days late for my period and on the day I was suppose to start I had spotting. My breasts have been sore for 3 weeks and I stay very tired. I have taken 3 pregnancy tests last one 5 days ago and all are negative. Do you think I may be pregnant?

It's possible. Since the last test was several days ago, either test again at home, or see your doctor for a test there.