Suggest Treatment For Delayed Period, Fever And Cough After Having Sex

I have sex with my gf on 4/1/2015. Her normal period time was 5-8 January 2015. Today is 14/1/2015. She haven't feel like period. After 4/1/2015 she was getting ill, like fever, cough. Please suggest proper instruction. For this I shall ever grateful to you.