luteal phase dip

This is the second month I have a temp dip at 6/7dpo..
Last month I thought it was an implantation dip but in the end I wasn´t pregnant, so now I´m thinking maybe this is just a new thing I have since my pre-O temps really changed too in these last 2 cycles, they are a lot higher now.
I read that you can have a dip halfway luteal phase independently from pregnancy because that´s when the corpus luteum dies, does anybody have this? I´m thinking I might have a progesterone deficiency..
And with my pre-O temps being higher the difference between pre and post O is smaller, will I ever be able to conceive like this?
I´m overanalysing aren´t I ? :)
Any input appreciated !