Protein and nausea

[Newsoulz 11]

I'm in the preop phase and have been having severe nausea when drinking my Protein Shakes. My nut suggested trying a different shake and I did. I figured out that my post nasal drip is causing the nausea and I have to take my sinus meds religiously to minimize the nausea. I'm just worried about post op Protein intake and taking meds and wondering if anyone else has had a similar experience and how you dealt with it.

Btw my surgery is scheduled for 4/11.