Welcome to the forum. I can understand your concern for the problem through which you are going. Your symptoms suggest that you have a Bartholin's cyst
that is painful. It usually results in swollen and hard labia. Since pus is coming out you should visit an emergency room or consult a gynecologist. The pus and infection is spreading through lymphatic drainage
and your hip and leg (R ) is getting numb.
You are in need of antibiotics ( you may need infusions ), analgesics and clinical examination. A warm sitz bath can give you a little relieve. You should be examined physically, the cyst may need a drainage by a doctor. The pus needs to be sent for culture to rule out any STD
Do not stay back at home and neglect yourself, your agony may get increased.
Get treated and stay fit, have a good day, take care.