I used to get them all the time when I was younger. Hurt like hell. The last time was over 10yrs ago now even though they haven't been removed.
The last time, I went to hospital and the Dr said I had the biggest quincy she had ever seen (ball of pus on my throat). The pain was terrible. To get rid of it they sprayed something to make it numb, then they jabbed it with a needle in it, then they got a scalpel and cut it (shit myself when they put in my mouth!!!) - the amount of pus and blood that came out was incredible (yes disgusting!). Gave me some steroids and antibiotics etc and never had bad tonsilitis ever again.