Okay so I am freaking out a bit. I quit using birth control in December after my pack was over. 12/20. My <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period app</a> that I have been using said that my fertile window was 12/26 - 12/31 (ovulating on the 31st). Had unprotected sex 12/25 , 12/27 , 12/28 & 12/31. My period is not supposed to come until 1/14. Early on the 31st, I had some pink spotting.. that turned into what seems to be my period. It's not exactly heavy but it's red.. and I know implantation bleeding is rarely ever red. I also know that implantation doesn't usually happen until about 6 days after ovulation. So my question is.. is it possible that I just got my period because of stopping birth control? Messing up my cycle? If I had a fertilized egg during my fertile window.. will this 'period' keep the egg from attaching? I'm really anxious about all of this and would like some answers or advice from some of you! Thank you!