Since the 14th I have been trying to get pregnant. The first day of my last period was the 6th. For the last four days my breasts have been tender & feel full. I also have been feeling nauseous in the morning. Today I had a pap, came home & had sex and when I went to the bathroom afterwards I noticed a light pink discharge. My partner also says there is a different kind of smell. My doc took a pregnancy test and it was negative. Is it possible for me to be pregnant but it's too early to show up on a pee test?