progesterone cd 21

My progesterone level on cd21 was 17.5. 
A few months back on cd21 it was 9.8.
I'm suppose to start today but, nothing yet. I've been feeling very off but, definitely don't want to get my hopes up because I've been trying for 4 years. 
Pregnancy test came back negative.
Doctors appt next week for a normal pap then to talk about steps to conceiving. 
Do these progesterone levels say anything to you guys?
Thanks in advance!