i'm 19 year old, have had normal menstrual cycle till last 3 months. i have not had my periods since 3 months and m also experiencing low abdominal pain and lower back pain, i also feel tiredd all the time regardless of how much rest i got and also have brown vaginal discharge at times. Also in last few months i have gained weight, especially around my belly and lost my appetite. I know there are many people here who has it. Do you guys think i have symptoms of having it?