Any idea what this is ?

I have a post on my page explaining what I usually go through. However recently I’ve been having new symptoms that are really scaring me. I’m 23yr old female for reference. - The past 3 shifts at my desk job I have had a “ flare up” that lasts 30min- an hour. It’s HORRIBLE. It starts with severe neck/ spine and head pressure and when I say severe it feels like my head and neck are going to explode out of my body. Then it’s followed up with me feeling extremely weak extremely fast, holding my head up seems like a heavy duty task, even sitting up In my chair is damn near unbearable, I get this out of body feeling like I can’t feel / fully control my body, it gets hard to concentrate and most recently today - I got two new additions : a sloshing wooshing sensation in the back of my neck and collarbone area, and a LOUD ringing that lasted for maybe 10 seconds but I couldn’t hear anything else when it happened. I’ve also been having burning in my temples / temple pain and pressure but that isn’t new I’ve had it before so I’m not too worried about that but it is really bothersome. I have a neruo appointment coming up end of Feb ( I’ve had an mri done of my head and neck a while back it was normal ) but I’m seriously so confused and scared at what’s happening to me. Any ideas of what this could be ? Also I dropped a pic below of some of the things I felt the prior episode