I have not really read the other comments but wanted to post. I have this almost every month. Sometimes it starts as early as a week before my period. I never ever noticed this until i began to check my cervix. it is almost like the blood is waiting to come out but has not began to fully flow yet. However, I never get any on my undies and only when checking the cervix will I notice some pink and sometimes brown or red spotting and blood tinged cm. I pray oneday it will actually be implantation but i get my hopes up every month knowing what it means. Maybe one day I will quit obsessing but not now. Good luck and baby dust. FX and keep us updated.