I feel like my body is falling apart, any advice?

symptoms:

knee pain, joint pain in general, I don't have my period at all, anemia, headaches, fatigue, diahrea/indigestion/bloating/undigested food and blood in stool/ tooth aches/ hair loss/ abdominal cramping as well as outrageous appetite (trying to control my binges), frequent thirst, pains in liver area, and sometimes it hurts to swallow foods like bread and peanut butter.

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