My tonsils are swollen and hurt like i have a needle in my throat. i saw a yellow thing coming out from one of the holes in my tonsil. what can it be?

Yuk!! See A Doctor!!: Did it move??... Well, whether or not it did, you should get it checked-out by a doctor. It could be something stuck in there from something you ate (most commonly a teeny little fish bone) or maybe it was a small amount of pus from an infection. Use your imagination for whatever else it could be-- but it should be evaluated in-person, especially since it hurts and isn't going away.

Tonsilitis: Bacteria and viruses can cause tonsillitis. A common cause is Streptococcus (strep) bacteria. Other common causes include adenoviruses, Influenza virus. Epstein-Barr virus, parainfluenza viruses, Enteroviruses and Herpes simplex virus. See your PCP or an ENT doctor.

Tonsil stone: Tonsil stones or tonsilloliths, are a common cause for concern, but are generally benign. They can be a source of pain and bad breath however. Try gargling with salt water if this is a recurring problem or sometimes using a waterpik can help prevent these.