A320
Flight Attendant Current
Physiological - Other
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor; Flight Deck / Cabin / Aircraft Event Illness / Injury
General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
During the boarding process; the F/O came out of the flight deck and asked me (FA 1) to go into flight deck and to let [the flight crew] know if I smelled anything. I smelled the musty dirty sock smell.  I informed the F/O that I smelled the musty odor.  The Captain made an announcement to have the passengers deplane the aircraft.  After all passengers deplaned; the entire flight crew went to the gate area.  I called for a manager to meet us. The FA 2 complained of dizziness; FA 3 complained that her chest felt heavy.  I was experiencing a bad headache initially and some minor coughing within the next hour of event.  Upon driving home from the airport; approximately 2 hours from fume event; my throat became sore (difficulty with swallowing) and the cough became worse.  I decided to go to Urgent Care to be assessed.  They gave me a prescription with a follow up appointment for a re-check of respiratory issues.
Flight Attendant reported Captain directed everyone to deplane during boarding due to a fume event.