Sore breasts, twinges in pelvic region, creamy discharge, sore labia at night

Hi, my first post. We've been TTC for 3 months now. Odd thing: 8 days into my cycle (3 days after my period), I experienced a light pink spotting.
We tried during the fertile window of days 12-16, and I am now beginning to notice some symptoms on cycle day 19. My breasts are sore; I have very creamy white discharge, and I've been getting twinges (slight cramps) in the left side of my pelvic region and even a little right in the middle. Also, at night my inner labia has been feeling sore and swollen. Never felt that before. I know it's not from too much sex because we're the type of couple who makes love everyday, and I've never gotten sore from it.
It just seems a little too early for implantation, as my period isn't due for another 9 days. I started my cycle on the 1st of Jan., so I'm figuring my period should come around the 28th or 29th. Any suggestions or help?

I STARTED MY CYCLE ON 30 DEC 2006 SAME CYCLE AS U,AND FEELING BLOATED AND SORE ITCHY NIPPLES AND CRAMPY FEELING ON MY TUM.HOPE ITS A BABY,IF NO PERIOD BY MONDAY IL BE OEVR THE MOON.LEME KNOW HOW U GET ON