The menstrual cycle as a coordinated endocrine system The ovulatory menstrual cycle is usually described in phases: follicular, ovulatory, and luteal. Underneath those labels is a dynamic feedback system involving the hypothalamus, pituitary gland, ovaries, endometrium, cervix, and fallopian tubes.…

Ovulation in the menstrual cycle Ovulation is the process in which a mature oocyte, commonly called an egg, is released from a follicle in the ovary. It is a key event in the because can only occur if sperm meet…

What ovulation pain is pain is lower abdominal or pelvic pain that occurs around , typically about 14 days before the next menstrual period in a 28-day cycle. In people with longer, shorter, or irregular cycles, the timing may be…

Why cervical mucus matters for conception Cervical mucus is produced by glands in the cervix, and its properties change throughout the . During less fertile phases, mucus may be scant, tacky, cloudy, or form a thicker barrier at the cervix.…

Understanding ovulation and the fertile window occurs when an ovarian follicle releases a mature oocyte. In a typical , this happens once per cycle, although the exact day can vary. A common misconception is that always occurs on day 14.…

Ovulation: the short biological event at the center of the cycle is the release of a mature oocyte, commonly called an egg, from a follicle in the ovary. After release, the egg is picked up by the fallopian tube, where…

Ovulation timing: the physiology behind the estimate The is counted from the first day of menstrual bleeding to the day before the next period begins. usually occurs once per cycle, after follicular development in the ovary and a surge in…

Understanding the terminology: late-term versus postterm Pregnancy dating is usually calculated from the day of the last menstrual period and confirmed or refined by early ultrasound when available. A pregnancy is commonly described as full term at 39 0 days…

What 41 weeks of pregnancy means Pregnancy dating is based on the best available estimate of gestational age, usually using the first day of the last menstrual period and early ultrasound measurements. A is therefore not an expiry date; it…

Understanding the week 40 due date The conventional estimated is calculated as 40 weeks, or 280 days, from the first day of the last menstrual period. Johns Hopkins Medicine describes Naegele’s Rule, a commonly used method: count back three months…