“zhèlǐ téng” “shàng cèsuǒ hěn pínfán” “yǒudiǎn yǎng” dōu kěyǐ xiān shuō

“这里疼”“上厕所很频繁”“有点痒”都可以先说。

You can start by saying 'It hurts here,' 'I go to the bathroom often,' or 'It's a little itchy.'