SO, I am on clomid and I get my progesterone levels checked on cd21--doesnt matter the 7dpo part. My DR just wants me to get them done on cd21. Last clomid cycle, I went in cd22 which just so happened to be 7dpo. My progesterone results were 17.2 Great medicated level, the DR said. This cycle, I didnt ovulate until cd17 and I got my levels taken at cd20, 3dpo. My DR called me the following monday and said my levels were outstanding, 23! I started thinking about it, and realized that progesterone levels actually peak at 7dpo. So this is my question. Are the progesterone levels between 3dpo and 7dpo that much different? I read a couple things online where it said it is like a bell curve and will just keep going up. Does anyone know if the time between 3dpo and 7dpo would cause those levels to be a lot higher? Or would it just be like a couple more points above 3dpo? Like 25 or something? Or does it sky rocket between those days and there is a chance it is even higher? Any help on the matter is much appreciated.