Even when everything works perfectly it can take about 12 mths to get pg (or so i've been told). And you still have a way to go before you get to that. But i know how you feel... every month feels like forever. I remember thinking "it's a myth! This isn't how you make a baby... cos it's not working!" (But it did after a few cycles!)

As to the low progesterone.... My obstetrician told me that although they can test for it it's not an exact science: there isn't a proven 'range' that is normal or below normal. There's a bit of guess work involved. So yours might be on the lower side but still be just fine for baby making. But i guess you could see a specialist if there's nothing happening soon, for an opinion. BUt having regular cycles of 24+ days is good news too: usually means you are ovulating ok. Good luck!