You said,
"I didn't sleep enough, drank caffeine or alcohol, menstruation and sometimes unexplained reasons the anxiety or lightheadedness reared it's ugly head."

Those are all common triggers for the symptoms you mention. Anxiety is a very common symptom of PCS.

Who knows. You may be having silent migraines or just common PCS anxiety and lightheadedness. Over-stimulation and mental fatigue can lead to both.