Is it normal for my throat to hurt worse after a rocephin (ceftriaxone) injection? i have strep throat and im feeling more painful than i was before

Strep effects: When you start treating strep or any other infection you are playing a catch up game with the germ.The tissue injury/pain due to the infection has a head start and does not begin to respond to treatment until the antibiotic has achieved high enough blood/tissue levels to kill the germ. It is not unusual for strep throats to become more intense before responding. It's not the shot, it's the germ.