@burcinc-- Of course you don't need to have your tonsils removed. That's usually reserved for people who have recurrent tonsillitis.
Treatment for tonsillitis depends on the cause. If it's caused by bacteria, you can take antibiotics. If it's caused by a virus, there aren't medications for viral infections, but anti-inflammatory medications are helpful.
You need to have a swab test done at the doctor's office. That's the only way you can know whether the infection is bacterial or viral.
For tonsillar abscesses, warm salt water gargling is very good. Mouthwash is usually too harsh because of the alcohol content. You can make your own mouthwash by dissolving sea salt in boiled water. After it has cooled down, gargle with this solution several times a day to treat the abscesses and get rid of pus.