Is creamy white discharge a sign of pregnancy?

My husband and i have been ttc for quite some time now. I had my period on December 16, 2009. My cycle is about 26-28 days. I have been using an ovulation calender because ovulation test just get too expensive. Per the calender my fertile days are from about the 24th thru the 29th with ovulation being on the 29th or somewhere around there. We had on the 24th then twice on the 25th. I noticed that after the second time on the 25th a very small amount of very light pinkish blood. We did not have on the 26th but we did on the 27th and Jan. 3rd. On the 27th I noticed right before we had i had a very small amount of pinkish mucus. Today is Jan.7th and I have been having a creamy egg-white discharge the last couple days. I kinda feel like im gonna start but my are sore on and off. I have had really bad heartburn/indigestion the last couple days. I have had the flu from the 28th to the 2nd but still have the cough from it. So my body has been off and very sore everywhere the last couple weeks. I don't want to waste a test until i miss my period which is due in 4 days. Is this discharge a sign of pregnancy or is my period coming?