Could this dip possibly be an implantation dip on my chart? Today is 10DPO so this larger dip happened last night at 9DPO. I have Ava bracelet and did OPK so pretty sure I did ovulate on the 17th....My cycle is pretty normal and I usually start having cramps the day before period with light spotting but that’s not til Friday and period should start Saturday. Feeling light cramps today too. Thoughts?