Hi, these tests were taken on CD 15 of my current cycle and CD 15 of my last cycle why are they completely different? My cycle is very regular, always between 28 and 31 days. We've been trying to conceive for 8 months with no luck. I've had a CD 21 blood test which came back normal but with slightly raised androgens. My progesterone level was28 which my doctor said was fine but reading around it seems low. Can anyone help? Thanks!