TTC low progesterone

I am currently TTC and taking Letrozole due to PCOS, chemical pregnancies and low progesterone levels.

my first cycle was 2.5mg of Letrozole which gave me a suboptimal progesterone level of 24

my second cycle was upped to 5mg of Letrozole which has strangely given me a lower progesterone reading of 21

i‘m not sure what my consultant is going to do next. My hair is falling out on Letrozole and my progesterone is worsening rather than improving.

has anyone else experienced this? I’m very stressed which I know won’t be helping.

i’m also taking inotisol, vitamin d, folic acid and omega 3