I messed around with an ex for 5 minutes at the most, but it was unprotected. According to my chart, I was very fertile. I started spotting 9 days before my cycle and two days later "my period" started. It was on for two days and now it's off. I didn't have the "residue" but I bled regular on the first day and not as much on the second day. I'm confused but I feel like its too soon for a test. Help! Has this happened to anyone else?