Hi, I'm 17 year old, female. I just want to share my health problem I experiencing. So i think it started with a tooth decayed in my molar then few months I noticed there's a pea size lump in my neck (subment part) next thing is I started sneezing, have runny nose, nasal drip and clear discharge on my nose (i think its like allergy rhinitis) and started getting sick. Fortunately, the fever and allergy lasted for a week and I was feeling better. My problem is that I still have lump. So i went to dentist because i thought it's from tooth infection. I just want to ask if my previous experiences is because of my tooth? And what are the causes of swelling lymph nodes? Does that mean cancer i hope mine is not.