I Have Been Sick Since August 23rd With A Wicked

I have been sick since August 23rd with a wicked sinus infection that seemed to turn to an incredibly painful throat infection that turned into a sinus and throat infection. I have been on 5 rounds of antibiotics and the latest one seems to be helping somewhat (Clindamycin). My problem now seems to be that my body is over producing mucus in my throat. I wake up choking at times. Is there something that I can do for myself that can stop this or is this a sign of something else?