Yes, it’s possible that you may experience sensitivity after getting your teeth whitened as this is a common side effect of this treatment. The reason behind this sensitivity is that the whitening process, whether it's done in-office or with at-home kits, uses bleaching agents such as peroxide to whiten the teeth. This process can cause temporary irritation to the nerves in the teeth, leading to some sensitivity. There are always ways to alleviate this sensitivity, such as using desensitizing toothpaste or gels, avoiding hot or cold foods and drinks, and/or reducing further exposure to whitening agents. However, it's important to note that if you’re experiencing severe or prolonged sensitivity after your treatment, it's best to contact your dentist as soon as possible as it could be a sign of a more serious issue with your teeth or gums.