1) MENSTRUAL PHASE
The four phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase. Common menstrual problems include heavy or painful periods and premenstrual syndrome (PMS).
2) FOLLICULAR PHASE
The follicular phase, also known as the preovulatory phase or proliferative phase, is the phase of the estrous cycle during which follicles in the ovary mature from primary follicle to a fully mature graafian follicle. It ends with ovulation.
3) OVULATION PHASE
Ovulation is the release of an egg from your ovary, into your fallopian tube. It typically happens about 13–15 days before the start of each period (1). Like your period, the timing of ovulation can vary cycle-to-cycle, and you may have the odd cycle where you don't ovulate at all.
4) LUTEAL PHASE
The luteal phase is one stage of your menstrual cycle. It occurs after ovulation (when your ovaries release an egg) and before your period starts. During this time, the lining of your uterus normally gets thicker to prepare for a possible pregnancy.
