There is a yellow bump on my toungue for over a month or nearly two months. I've been a smoker for at least three years and I've reduced smoking in past two months significantly (from one pack or more per day to 3 or 4 pcs in a day). Three days ago I vomated very badly. From then there is a filling that something is stuck at my throat. On the internet it showed that there can be a strain in my throat due to vomating and it will heal in one or two days. I started gargling with hot and salted water from yesterday. But now there is an itchiness in my throat. That yellow bump is paining a little bit too (very little bit). Is this a symptom of cancer? I will visit a doctor in 10 days as I can't right now due to work. Is it highly necessary to consult a doctor before that??