My 19 yr. old son recently starting taking Levaquin for a tonsill...

My 19 yr. old son recently starting taking Levaquin for a tonsillitis (throat infection) and he has now had severe chest pains from the Levaquin. Has anyone else reacted this way from this medication and if so, what did you do to get the chest pains to stop. He has stopped taking the Levaquin, however the chest pains have not lessened. When he tries to eat something, the chest pains get worse. Please someone out there help me if you can! I hate to see my son in such pain.