Within a week of finding out that I was pregnant (just days after missing my period) I knew something was wrong when I started to spot. I ended up in urgent care where I had a great doctor who ran tests and placed me on bedrest until I could see my OB. Sure enough when I got in to see her that Monday my progesterone had dropped significantly. My level were on the verge of miscarriage so immediately she placed me on supplements until the beginning of my 2nd trimester. I delivered a healthy baby at 39 weeks. In the future I wwill have to take supplements again but that is just for a precautionary step. Some women are just not able to produce to levels that they need. But each pregnancy is different. Good luck!