Braces or orthodontic treatment is basically done to put malaligned teeth into the right places where they should be present naturally..wearing braces inetially can cause some amount of pain as the wires and brackets put some force on the teeth which is very minimal & hence vanishes in a weeks time as in your case.This pain is absolutely normal and is well tolerated. I hope your orthodontist must have given you post operative instructions about this treatment.
Next Steps
you should keep the teeth & brackets clean as they attract a lot of food debris which may cause gum problems,visit your orthodontist regularly or as the appointments given to you
Health Tips
in case of any query, feel free to ask your dentist.