I had my progesterone drawn at our local fertility place last Monday 7/29 they said my level was 28 which was good. Well since my insurance decided they wasn’t gonna pay I decided to go to my OB. He checked my level on Friday and it was 20. However my HCG levels are rising like they are supposed to. Could the numbers in my progesterone be off because they use different machines? The nurse said 20 was a normal and good level but would send my OB a message.