Is it normal @ 46 for periods to come every 3 mos? until yr ago always had normal periods every 28 days. im also very irritable. is this perimenopause

Irregular menses: As women approach menopause, the menstrual cycle can and usually does become irregular. Excessive bleeding ("gushing" or "flooding") should be evaluated by an Gynecologist. Hot flashes remain the hallmark symptom of menopause, indicating the decline of ovarian response to FSH (a hormone produced by the pituitary gland). Emotional changes are also very common, including irritability.