I am so sorry. That sounds horrific. Was going to suggest swishing with salt water. But sounds like that might not even be possible. Hopefully others would have better advice. 
@Lemontree, Iām soooo sorry for your pain & suffering. Intraoral ES surgery is really awful & a challenging recovery.
Youāre correct. The transcervical (surgery through the neck) is a less painful recovery in some ways because it doesnāt impact the ability to eat, drink & swallow in the same way that transoral (through the throat surgery) does. There is a higher risk of infection through the throat since your food & drink have to pass the incision. I firmly believe you should make a follow-up appt. to get your throat checked because of the gross taste you have in your mouth. A clean wound should not be causing that. Gradually, over the first month after surgery, youāll begin feeling better. If I were you, Iād politely demand to have the second surgery through your neck.
Iām aghast about the dismissive way youāve been treated by your surgeon. If you have an infection then you certainly need antibiotics for a longer period. You should also ask for a 10-14 day course of prednisone if you can swallow pills. Those are generally small but they can help significantly w/ swelling.
Are you able to suck on ice chips or popsicles to help ease your throat pain or is that too difficult?
Here are links to a couple of threads written by people who had intraoral surgery. There are others as well if you want to search for them (use āintraoral surgeryā as your search term). There is reference made to the surgeon Rxing a prescription mouth rinse to help prevent infection & promote healing, but I couldnāt readily find the name. That is definitely something to request from your surgeon.
You could send a private message to @Weezie65 &/or @BFresh to ask how theyāre doing now & what helped them most during recovery. I recall BFresh had a slower recovery than Weezie.
Iāll be praying that your wound will begin healing in earnest so you can start feeling better. 
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I had the external approach. I just wanted to be clear on that. Dr Trevor Hackman did my surgery. He sent me home with a medrol dosepak along with pain meds.
Thanks @Isaiah_40_31
Thanks for the links and thanks @Jules i for your precious message last week and forgot to reply.
I saw that about the mouthwash when reading the previous posts, I canāt believe no one is checking up on my wound. My next appointment with my surgeon is two months from now. My wound looks like a mangled up mess. I saw on the thread that someone else had it done where they go in through the side of the mouth behind back molar way and that there was a hole left. Im wondering how long it takes to heal. I feel big chunks of food is just going to enter in there, itās just vile.
Iāve been cutting up ice lol lies because I canāt open my mouth to fit them in lol. But they have been my favour, ice is helping, it helps cool it down.
Thanks all x
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I feel for you, it sounds grim & aftercare awfulā¦if itās any consolation I wasnāt able to open my mouth wide enough to clean my teeth properly for a week or 2 & that was with external surgery, hopefully that part will improve soon.
Is your GP helpful at all? It does sound as if you could have an infection as @Isaiah_40_31 says, going by the horrible taste you have, & itās rubbish that you canāt have more antibiotics! Iām sure youāre probably not feeling up to being pushy, have you got anyone who can advocate for you, either with your GP, the surgery team, or a trip to A&E?
Hang in there, praying for you & sending you hugs 
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