Last unexpected visit to pediatrician

This is my first story here. I am a 23 yo spanish boy who has been fascinated with the medfet for years. There will be mistakes, English is not my language, but i will be careful with grammar. Please, forgive me if you see something wrong and enjoy it.

I want to tell you a tale where two siblings are involved (Paula and Javier), both are in their last high school course and when the year finish, will start college, but their mum wants that both are vaccinated by their old pediatrician, doctor Tom.