Mittelschmerz Occurs During the Ovulatory Phase

Physiological Basis and Timing

Mittelschmerz occurs at mid-cycle during ovulation, when the follicle ruptures to release the egg, typically happening approximately 14 days before the next menstrual period in women with regular cycles 1
The ovulatory phase is characterized by a sharp increase in luteinizing hormone (LH), estrogen, and follicle-stimulating hormone (FSH) levels during the late follicular phase, coinciding with mittelschmerz 1
The transition point between the follicular phase and luteal phase of the menstrual cycle is associated with mittelschmerz 1

Peak estradiol levels are observed during the ovulatory phase when mittelschmerz occurs, with a sustained mid-cycle increase 1
Low progesterone levels are present during the ovulatory phase, with progesterone rising after ovulation during the luteal phase 1
A luteinizing hormone (LH) surge triggers ovulation, occurring during the ovulatory phase when mittelschmerz is experienced 1