So 9 days before my period is due i had mucus that was tinted pink. and it was just a small amount about the size of a quarter. That was all there ever was. But that has never happened to me before. Could that have been implantation bleeding? Please if anyone has had implantation bleeding before share your opinion with me. Thanks! Also i have been feeling bloated, having head aches, lower back pain/preassure and random slight sharp pains in my lower abdominal area for about 2 weeks now.