WOW, Dontgiveup! Your images look scary. Your IJV is really compressed. All the symptoms you described go along w/ IJV compression. Not everyone gets a sore throat or swallowing issues from ES & some have been dismissed as not having ES (in spite of visibly long styloids in imaging) because of lack of throat issues. It’s not a mandatory ES symptom.
Some of our members w/ IJV compression have gotten decent relief from some symptoms when they took a blood thinner. Perhaps seeing if you can get an Rx for one would be worthwhile. Plavix is what was Rxed in the US. Here’s a link to a long thread w/ a discussion about this: Dr. Hepworth and Vascular ES
I will start praying for you to get in for the imaging ASAP. Call frequently to check back in for cancellations & make sure you get on a cancellation list if one exists for the catheter veinography test. Be as proactive as possible. The squeaky wheel often gets the grease.