Progesterone is a hormone released by the corpus luteum in the ovary. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. It may also be involved in the growth of certain cancers.
I've been following various people's posts about the GRE for 10 months now. Some people don't study at all for the GRE, some study for a weekend, the average is about 2 to 3 months, and some study for a year or more.
If you take the GRE on paper or a GRE Subject Test, it will take longer for you to receive your scores. It will take up to five weeks for you and the schools you requested reports be sent to to receive your official test scores (there are no unofficial scores for paper-based GREs).