I hope you've called your doc. He might tell you to wait it out for a few days - it sounds viral right now, which means the antibiotics won't help -- even worse, the antibiotics also suppress your immune system, which is the last thing you need while trying to fight a virus.
My daughter does tend to get sick whenever she is on more than one pill of Entocort - the first day of the illness her fever went to 102, and she had such a bad sore throat that the student clinic thought she might have mono. The blood test was negative for mono, and the sputum test was negative for strep. It was "just" the flu.
Over the week she got worse, then better - but, while on two pills of Entocort, she was unable to gain any more traction, after a week, without going for the antibiotics. The Zithromax Z-pack cleared it right up.