low libido and sleep issues in luteal phase

[Fie]

Hi there.
I am 42. I have been using transdermal bio identical progesterone cream for a few years due to poor sleep. I take magnesium glycinate, inisotol, omegas and zinc. For the first 2 weeks of my cycle I sleep great and have a good sex drive. However from about day 15 onwards my sleep goes terrible and my sex drive falls off a cliff!
Any help?!
Thanks