I've been on Portia BC since December. I've never missed a pill and the most I've only ever been 'late' taking it by an hour or so. I had sex for the first time on Monday, and he did not use a condom. He also did not ejaculate in me or anywhere near there. It was also very quick, only a couple minutes. However, today I noticed a little bit of spotting, it was a pinkish red color. I've spotted a couple times before in the past, but usually a few days after I start a new pack. My period is due next week. Could this have been implantation bleeding? I've also been stressed, so I don't know if that could've caused me to spot, or what. Please help