Looking for a little advice from anyone who has experienced an implantation dip. The first picture is last cycle, which was very normal for me...I usually have a slow rise the first couple of days after O but once my temps are above 98.0, they stay between 98.0 and 98.5 until it drops for AF. The second picture is this month. I had a pretty significant dip on 5dpo. It seems a little early for implantation dip, but I've been charting for 6 months and this is the first time I've ever had a dip below 98.0 during my literal phase. Does it look like possible implantation or just a fluke?