Faintfeelingwhile driving/tinglinghandsfeetlegs. almost passed out.left arm weak. lightheaded/blury vision.overallhealthy31yo female. labs/mri normal?

See a neurologist: There are many and various illnesses which could cause symptoms you have described. I can appreciate your concerned about your health, but finding a proper diagnosis and treatment may be the answer to your worries. It is important to rule out any serious condition to cause this condition. Rec.: see a neurologist for evaluation, labs and imaging (if needed). Take good care.