You may have a rotten tooth if you experience the following symptoms:

1. Tooth pain: Rotten teeth can cause persistent or sharp pain in the affected tooth. This pain may be worsened by chewing or exposure to hot or cold temperatures.

2. Sensitivity: If you have a rotten tooth, you may experience sensitivity to hot or cold foods and beverages.

3. Discoloration: A rotten tooth may appear discolored or darker than the surrounding teeth.

4. Bad taste or odor: Rotten teeth can cause bad breath or a bad taste in your mouth, even after brushing or using mouthwash.

5. Swelling or inflammation: In some cases, a rotten tooth may cause swelling or inflammation in the gums around the affected tooth.

If you suspect that you have a rotten tooth, it's important to schedule an appointment with your dentist as soon as possible. They can evaluate your tooth and recommend appropriate treatment, such as a filling, crown, or root canal, to address the underlying issue and prevent further damage or infection. Delaying treatment for a rotten tooth can lead to more serious oral health problems, so it's important to seek care as soon as possible.