Are they sure it is a true infection and not viral? If it's viral no antibiotic is going to help. As far as giving you the same one, no, they should try something else. When I use to take Amoxicillian so much I actually got immune to it so now it does nothing for me.
Whatever this cold/flu thing is everyone has it and it doesn't wish to go away. Have you ever tried a nasal rinse like a Neti pot or spray bottle? My ENT gave me one and so far it really has helped. Took a few times to get use it to it, but they do work.
Feel better Yalie...JJ...Another CT. resident....