Hello, Your description indicates the bumps are located outside of your mouth on your cheek along the jawline. I do not think this would be from your mouth unless your saliva has irritated your skin. Viruses can be carried in your saliva. A heat rash is most likely with your medical history and description. Your sweat glands contribute to the condition. Keep your face clean and avoid hot and humid conditions. Keep hydrated. Contact dermatitis or an allergic reaction is possible. If you are referring to inside your mouth, I expect this to be from an irritant. considerations are: allergic reaction medication reaction diet change vitamin deficiency viral, bacterial or fungal burn I recommend warm salt water rinses. the medication Bendryl has anti-inflammatory benefits. other anti-inflammatory medicine includes Tylenol and Advil. Keep well hydrated. Proper nutrition Nd supplements as needed help your oral health. See your doctor or dentist if no improvement in one to two weeks. Thank you for your inquiry. I am glad to answer additional questions.