Does anyone know of a valid reason not to give antibiotics to someone who's pregnant? I am 23 weeks pg and I've had appallingly bad 'flu' for 8 days which has now turned into a nasty throat infection. Both my dh and ds have got it and have been prescribed antibiotics which seem to be effective so that's obviously what I need too but the doctor that I spoke to earlier is refusing to let me have them and won't give a reason.