Nice watch!
Before you get it serviced, I recommand you do not touch again the balance bridge - if that´s actually what you did. If by any chance the balance staff is not broken, it will soon be if you manipulate that part. Probably the most fragile part of a watch and most often the most expansive to change!
But if the balance is loose, it is probably to late... At least, by not touching it it, you will not arm more the hairspring.