Possible Pregnancy: Early Period, Negative Tests - Seeking Advice

Question
Hello,
I am a 21year old female. My cycle is about 28-29 days. My period came almost a week early for the last two months but its usually never late.
My last period was on May 29, 2010. I had sex on June 5, 2010. Now its July 4, and i still have not gotten my period yet. I took home pregnancy test twice, but both came to be negative. I don't have any early pregnancy symptoms, although my cervical mucus is thick and white, and sometimes when i collect it on my finger, it feels solid. I have never experienced this before.  

From the dates that i have mentioned, what are my chances of being pregnant?

Answer
So, if your period started on May 29, then sex on June 5 was about the 8th day.  Usually that is considered an unsafe time due to the fact that sperm can live inside you for a week.  That would be day 15.  Ovulation is around that time.  However, early or shorter cycles may be a sign of luteal phase problems (with progesterone) and negative pregnancy tests are generally accurate.  

I'm not as familiar with mucus signs as I am with temperature signs.  If you do not take your temperature to cross check the mucus signs, I have no more thoughts at this time.  Perhaps by the time you read this, the situation will have resolved itself with your period starting.  

Let me know if you have any further questions or comments.  Happy 4th!