Progesterone level?

So my dr had me get labs drawn to check my progesterone. I typically have a 33day cycle and she tested my progesterone level on day 19. I usually ovulate around day 19-22 depending. My level came back as 0.9,which I have found is low. Still waiting for dr to call me back to explain results and what the next step is. My question is has anyone else had this test done and had similar results? Is it possible the test was done too soon in my cycle? Thanks in advance!