When do most females start bloating for there period ?

Several times: Bloating often starts in the follicular phase of your menstrual cycle when your estrogen levels increase quite a bit and you ovulate.In general,however,bloating can occur in the premenstrual stage or around the time of PMS, during the aforementioned follicular phase, and then during your actual period.The bloating is due to fluctuating levels of estrogen and Progesterone leading to water retention