Hey I am 20 years old, and I have been on my period for over a month. it will stop for a day or two then I am right back on it. My lower back hurts all the time, my stomach is bloated, I have been gaining weight like crazy, and I can no longer sleep on my stomach or sides. I have been extremally tired all the time, and my breasts are sore too. I don't know whats wrong. I need help!