Hi i'm sixteen years old and have always being in good health. Last month I went to peru and got a stomach virus which resulted in severe diarrhea, so i took antibiotics and it eventually cleared in three days. But ever since this i've experienced nausea that comes and goes. Also i feel this sensation of a lump in my throat. I went to the doctor and he has given me zantac because he thinks it might be acid reflux. It's been one week and the nausea kind of decreased but my throat is really hurting and the lump still is there. Should i go see an ent about this?