Yikes, that sounds uncomfortable. Why do you believe it to be an ant bite? You have a bite bump and it's itching? Do your best not to itch and most things like that will get better to better, day to day. This should go away. You could always try an antihistamine like Benedryl which may stop itching too. Try a little ice pack on it? Not too comfortable but might distract from itching. You don't have an allergy, correct? This is just an itching problem?