So I have had very sore boobs for 4 days, but just assumed it was AF headed my way until today. AF was supposed to come Friday (I think...not 100% sure though since I haven't been regular since Mirena removal). Nothing until mid-day today... I started having very light cramps and when I went to the bathroom there was sticky very light pickish cm.Cramping stopped a little whle later and the cm has been very light pinkish all day, but no real sign of any red. I'm 16dpo/ cd 31. Could this be impantation bleeding? I'm waiting to see what happens tomorrow to see if I'm just easing my way into AF or if anything else happens at all. Does any one have any ideas though? Thanks!