I wrote regarding a similar problem on page 3, titled Mucus - Delaying Recovery. You might want to check out the response to that post.

At 15 weeks post tx. the mucus has finally decreased. My husband is no longer choking and is starting to eat small amounts of food. He did not experience the type of pain that you describe. Lottie

CG to husband, dx @ age 65, nonsmoker/social drinker. Dx 5/08 SCC Stage IV, BOT T1N2aM0. 33 IMRT - completed 9/12/08. Induction Chemo (Cisplatin, Taxotere & 5FU), plus concurrent Cisplatin.
1/09 PEG removed; 5/09 neg PET/CT; 5/10 PET/CT NED
Dental extraction & HBOT 2013; ORN 2014; Debridement/Tissue Transfer & HBOT 2016