yes..you can be..take birth controll pill...to avoid being preg
Any time you have unprotected sex there is a chance for pregnancy. It is however unlikely that it would happen on the last day of your period, but with an irregular cycle and sperm living for up to 5 days. it wouldn't be a stretch of the imagination that it could happen! Obviously if you are not wanting to be pregnant then there are better ways of preventing other than unprotected sex! Save yourself some stress and invest in birth control.