Is there any dishcharge?? It may be just an infection that can be easily taken away with medicine. If it feels very wet down there with no discharge more like a watery kind that Bacterial Viagnosis and if there is white disharge ike cottage cheese its a yeast infection it may be nothing dont worry. I do suggest you make an appt with a doctor though, the gyno.
U might wana go get tested for an std but it could jus be irrated dnt mess with it take a warm bath and tomro am if its still the same go to the dr