Cool (((Ryen)))) I have very similar symptoms. I work in a professional job atmosphere and I attend college Night School as well. I often have anxiety attacks when we have formal board meetings on a huge 30' long executive table and every one who is some body important is rounded up and the two doors to the conference room are shut and you could hear a pin drop. I do several things while I am at work to help eleviate the anxiouse symptoms like having no caffeine or sweets and I take a bathroom break before the meeting or class having to go during a meeting plays havoc on my anxiety.
But the one thing that I do while I am feeling extremely anxiouse during meetings or class is I close my eyes and I place my chin down towards my chest then I rub bothe of my temples with one hand across my eyes using my thumb and middle finger in a circlular motion I then hold my breathe for 15 to 20 seconds then I slowly and I mean very slowly start to breathe again then once I feel like my breathing has returned to a slow relaxed state then I open my eyes and slowly remove my hand.. It usually takes a minute two max for me ,If I get asked if I am OK I say that I have alot on my mind or I'm just tired...