Just to clarify, condoms is the best protection you can use, to stop pregnancy, and sex trasmited ills...
Anyways, YES, she can get pregnant even if she had her period 3 hours before you guys did sex... as long as you were wearing the condom right, you are fine man
Odi et amo. Quare id faciam, fortasse requiris.
Nescio, sed fieri sentio et excrucior.
~Harrie's proud brother!~