trying to conceive , low progesterone?

I had my blood drawn around day 22-23 of my cycle. The doctor warned me it might not give an accurate reading because it was past day 21. My progesterone was 0.6. I was having a lot of spotting every month 5 days before my actually period starts so I assumed I had a hormone imbalance. My cycles have been 24-26 days very consistently. I'm on day 32 and no period. If my progesterone was that low, is it even possible I could have conceived?