A progesterone blood test is conducted to ascertain how much of the progesterone hormone is within a sample of blood. This female hormone is produced whenever a mature egg is released from an ovary within a process generally known as ovulation. This hormone helps to prepare the endometrium (uterine lining) to just accept the egg if sperm fertilizes it. If the egg goes without getting fertilized, menstrual bleeding occurs and progesterone levels drop. Low joint JIA is the most common type of JIA. It affects less than five joints in the body - the most common knees, ankles and wrists. For those facing fertility issues, there are lots of options that will aide in successful conception. One of those methods is really a process referred to as intrauterine insemination. Adding a regimen of natural herbs and a few self massage techniques especially designed for fertility issues may increase the likelihood of IUI success.