According to WebMD, low progesterone levels are usually caused by problems with ovulation or a possible miscarriage. There are several conditions that can result in a change in progesterone levels. More »

www.reference.com Health Women's Health Menstruation

According to Dr. Julie Durnan, N.D., symptoms of progesterone deficiency manifest as infertility, acne, mood swings, low libido, brittle nails and slow metabolism. Additional symptoms include irregular menstrual cycles, ... More »

www.reference.com Health Conditions & Diseases

Discover if you have low hormones by testing your hormone levels with a saliva test, a serum or blood test, or a follicle-stimulating hormone test, recommends the Women in Balance Institute. The accuracy of a hormone tes... More »

Pregnancy, miscarriage, ovulation, polycystic ovary syndrome, birth control or pelvic inflammatory disease can cause spotting before a period, explains WebMD. Most women experience abnormal bleeding, and it isn't always ... More »

PMS is premenstrual syndrome, a condition that affects menstruating women and is characterized by a variety of physical and psychological symptoms that appear from ovulation to the onset of menstrual flow, according to M... More »

Disordered proliferative endometrium is a result of an anovulatory cycle that lacks ovulation and leads to high levels of estrogen from low progesterone levels. The University of Virginia School of Medicine describes ano... More »

Dr. Heidi A. Fowler on HealthTap explains that a short, light period can mean many things, from a change in hormone levels to the start of perimenopause. Women with thyroid problems and eating disorders also can experien... More »