To begin, I must say that I stopped taking my birth control pills (Ocella) mid-December, TTC, and had a longer than regular flow of 9 days instead of usual 4-5. That being said, I had unprotected sex on January 2nd, and again on January 24th. My AF was expected on the 30th of this month, and I have had absolutely no signs of it whatsoever. Tonight at work I noticed this in my underwear. I have not had a bowel movement today. Could this be implantation spotting?