So I just went to the bathroom and had some red/pink ewcm on my underwear. I'm thinking it's just from ovulation? My husband and I had sex last on Sunday so it would be too soon for implementation right? I am CD 17 on my cycle I have a 35-40 day cycle. Although my periods have been all over the place like this last time it was exactly a week late and the month before it was a week early. And last month I had this same kind of cm during my fertile window.