My 12 Year Old Daughter Have Ingrown Follicles On The

My 12 year old daughter have ingrown follicles on the side of her vagina and it burst today and stinky stuff drained out. I took her to the ER yesterday and that's what they said it was a nd prescibed her Bactrim 800mg to take two times a day and it is still draining out blood now but it is still swollen and a little hard area what should I do now