Hi there ~
I understand your concerns. Unfortunately there is no easy way to lose weight. There are two proven ways to lose weight:
1. Eat right - and healthy. Which might mean that you need to consult a nutritionist.
2. Exercise regularly - 4 times a week for 30-40 min per session and it should include both cardio and weights.
I hope you get your doctor appointment and if you need a psychiatrist
which should help with the anxiety
surrounding your weight. I hope you get yourself on the track to recovery and a healthy weight as soon as you can. I hope you also see a gynecologist for the problems with menstrual cycles. I hope this helped.
Take care and have a lovely day!