Have I damaged my breast implant by doing too much activity?

Two weeks after breast augmentation surgery, especially if implants are placed beneath the chest muscle is too early to be doing vigorous upper body activity like vacuuming or weight lifting.  It is unlikely that you have damaged the implant however your discomfort is a sign that you need to be less active.  Of course it is important that you check with your plastic surgeon for advice.

Breast implants are very durable, and it is highly unlikely that you damaged them from overactivity.  More likely is that you stressed your chest wall muscles and are sore due to that.  As long as your breasts look even, without significant swelling that corresponds to the pain (which could indicate bleeding) then there is little chance that you did any lasting damage to the muscles.  If you are concerned you should contact your Plastic Surgeon to be evaluated.  In the mean time, rest your chest wall muscles and resume activity slowly.