Do your worries revolve around your risk or her pregnancy? If you used condom correctly, you are safe (and she too, from pregnancy and HIV risk angles). Condom failures are too obvious to ignore, if the condom was failed, you would have known.
You don't have to do anything. Your sex was protected.
This forum is Hiv specific,However,common sense would suggest if the condom didn't break then there is no risk of pregnancy.