kortnie,
It could also be improper breathing. Anxious people often hyperventilate without even being aware of it.
This can cause tingling, numbness and weakness as well as feeling faint...everything that you described.
Try doing some of the breathing exercises here. Practice for at least 10 minutes...and practice everyday!
http://www.ehow.com/video_4405003_breathing-exercises-panic-attacks.html
You should feel almost immediate relief, but you will want to make this a regular habit to lower anxiety and symptoms.
Best luck!
S.C.