When it drops between 2-4, menstruation begins. Additionally, you may get very high progesterone levels after IVF because so many follicles were created. Most doctors use a high level of progesterone supplementation in the luteal phase, which can also result in very high progesterone levels. There is no progesterone level that indicates pregnancy, only an hCG level over 5 determines that. It is also worth nothing that progesterone pulses, so the level varies throughout the day.
Some doctors suggest testing first thing in the morning after fasting for the most accurate result.
You should see 150-200 per mature follicle. It ideally should be 100 or over after three days of LH-containing injectables. No chart can show ideal E2 levels since E2 varies per number and size of the follicles. As you approach your LH surge, it should be above 6 mm, ideally between 8 and 12 mm. You want to have a triple stripe pattern around the time of the LH surge and ovulation.