Hi, I have been prescribed antibiotics for a sinus infection which has been dragging on for months now. I have been given a different kind of antibiotic and have now had them for 4 days and have still not taken one. Because they are a) yellow in colour b) very big and c) have to take one every 12 hours, my HA has just gone into overdrive and convinced me that they are not ordinary antibiotics and I will have a allergic reaction to them. I don't know what to do. My husband is at his wits end and I am fed up with being like this.