I had sex with my partner on the 8th. 3 days before my expected period. I didn't have my period but have been having pink whenever I wipe on and off for close to a week now. Not enough to touch the liner, it's only there when I wipe. It's on and off. Sometimes it's there when I wipe, sometimes it isn't. Is A pregnancy possible AT ALL? Should I be concerned or worried? This is not normal for me at all. Has it happened to anyone? I tested to see if I was (from a previous time) and the test was negative. I haven't started my period though. Waiting a couple of weeks to test again.