Ay, ang teething fever talaga ay common sa babies, pero since on antibiotics na siya for the cough, mas better kung i-check mo pa rin with the pedia to be sure kung normal lang yung on-and-off fever or may ibang nangyayari, kasi sometimes mahirap i-distinguish kung fever from teething lang or from the infection pa rin. A few of my mum friends had babies na parang ganyan, tapos na-manage lang with proper guidance from their doctor, so don't worry too much! Keep monitoring his temperature and let the pedia know kung patuloy ito or kung may ibang signs na lumalabas, okay?