Dear , no need to worry
But sometimes Chloe cystitis ,because of that inflammation is there so body wl fight so as a body response in that situation fever comes ,but sometimes its without infection and sometimes its with infection so need to treat clinically so fallow your treating doctor once address the fever ,if accordingly to them infective then wl add on antibiotics and some other medicine too otherwise no need to worry ,they wl help u,
Next Steps
fallow your treating doctor