get a test done asap! then u can c if there's anything 2 worry about. And use birth control if u don't want2b a dad!

Pregnancy isn't the only reason for a woman to miss her period (stress, irregular periods etc can also cause a delay in menstruation).

Have you been using birth control?

Have her take a test, if it's negative and you don't wish to be a father then make sure she's on bc and you use condoms in future!