Hi Henry, When I first satrted suffering panic attacks and anxiety I used to get the dizzy and lightheaded feeling alot, I even started to avoid leaving the house because of it and became a hermit for about 8 months because everytime I use to step outside my front door that feeling would hit me and at the time I didn't know it was anxiety and used to think I would end up collapsing in the street. I am alot better now and don't let the anxiety stop me from going anywhere as I know what it is now.
Glad to hear you are feeling better today
Take care
Love Lisaxxx