Suggest Remedies For Irregular Periods,hair Loss And Facial Hair Growth

I m a 17 year old girl and my hair has been thinning, eye lashes falling out, eyebrows have been thinning also. I m overweight and it is hard to lose weight also. I ve been having facial hair and hair growing in areas that are more unusual. I also have a ring on the back of my neck which is darker pigment. I have infrequent periods, I haven t had a period in over a month and a half.