I am a 23 year old female, average weight and height, non-smoker. I have had a lump in my groin for about six months. I have had another one in my neck for about two months. My throat is swollen and I am always tired. I have been on antibiotics for three weeks. I now have diarrhea and thrush. Any ideas what is wrong with me? The doctor has said if there is no improvement after another week of antibiotics, they will do a CT scan on my neck.