I feel you. I went through a similar journey. The drooling can last a couple of weeks maybe more ...depends really on your healing process. The pain for me did not end so soon, as I had to get more surgery after my ENT got out of his league. Be careful with pain meds during this crucial time...you are going to get severely constipated using pain meds...and with not eating properly, especially boost and ensures, that contain a lot of protein, you will get clogged quick. I was not informed about this when I went though it, and ended up hospitalized. If you do take the heavier pain meds make sure to use your stool softeners, and flush with plenty of water or liquids other than the protein packed ones. Also if you are in severe pain, do not be silent...you can continue to tell the docs that you are not feeling any relief. They will switch to something different...be careful, as some docs are to ready to give over the big stuff like, Fentanyl. Super addictive and not something you want to get hooked on, I had to be weened off it for about a week in the hospital. The saliva ----I bought BabySmile S-502 Nasal Aspirator, to help with the excess saliva as mine lasted a while. I used talking apps on my phone, and wrote on notepads. It's going to get better. Patience---I know it is hard. If not eating becomes a problem, you may want to consider a feeding tube. I didnt get one until much later, and I wish I didnt wait...I lost over a hundred pounds. The feeding tube took the trauma of eating out of the picture.
