Hi there and welcome to the forums! I wonder if you could be hyperventilating? This is pretty common with anxiety. The old treatment used to be to try breathing into a paper bag (defintely NOT plastic, just a paper bag). Maybe with the anxiety you are doing shallow breathing and this can make you feel light-headed and dizzy. It would be good if you could take notice of your breathing and try to remember to take calm, regular breaths, not start gulping air or taking lots of fast, small breaths? Putting one hand on your abomen to ensure you are breathing from your tummy, not high in your chest, can help.
Anything you can do to help calm yourself and sooth yourself would be helpful.. listening to calming music, meditation for ten minutes... going for a stroll..
You will be OK! It sounds pretty much like I used to get from anxiety, but now I never have the problem, it does go away.
I hope this helps you worry less about it - it's a well known side effect of anxiety. Cheers and best wishes to you.
