my little girl (27months) had 3 days of over 40°fever but with n...

my little girl (27months) had 3 days of over 40°fever but with no seeable symptoms. the doctor reckons she has tonsillitis although she hasn't told me she has had throat pain. anyway he persuaded me to give her augmenting and she has had 3 doses now but is suddenly COMPLETELY CRAZY AND AGGRESSIVE. she was quite ill anyway and a bit wriggly but this is weird. I NEVER normally take antibiotics and cant believe i have been persuaded to give her her first dose. but this reaction (if it is to that) is so weird she also started shaking today and her lips went blue foe a while. again not sure if its the illness but my feeling gis its the drugs. should I stop?