One of my tonsils is very swollen, but the other is normal. it hurts really bad to swallow or talk. they aren't red. no other symptoms whatsoever.

Tonsillitis: Tough to say because lacking detail of duration of symptoms. Suspect this is a viral tonsillopharyngitis affecting one tonsil more than the other . Other symptoms may soon develop. Good supportive care with warm salt water gargles, tylenol (acetaminophen) or ibuprofen, and throat lozenges is good place to start. If symptoms last > 7-10 days, consider bacterial infection and see doctor for exam & culture.

Painful yonsil: Get help. You may have a tonsillar abscess.Upper air way x-rays are in order and an immediate evaluation by an ENT physician is in order.