I was shown fertile window was starting 8th to today but as my ovulation has not approached yet and variation in cervical mucus each day is changing my fertile window day by day. We are trying do the BD every day of the fertile window but as it keeps changing do we keep at it everyday until I get the LH spike and positive OpK test. We don’t want to lose any chance of doing the BD as we really want to conceive. Glow now says fertile window started yesterday to next Tuesday? Any insight will help please... what happened to my ovulation.... is it maybe coming later than cd 13/14 as usually does?