I'm a 16 year old female. i have been getting a slight burn during and after peeing frequently for the past two weeks. what could this be?

Needs evaluation : There's something abnormal, by your own observation. A medical provider needs to get more information. Have you had a UTI before? Are you sexually active? Have you had a yeast infection before? Is there discharge or any visible lesions? You will need to give a urine sample at the very least, and may need a more tailored examination. Talk to your parents, school nurse, or urgent care. Good luck!