So let me describe a scene I and my GF have sex, and I ejaculate into the condom, can we continue having sex? I still have a boner and everything is alright the only problem is that there is semen in my condom can we continue having sex or the semen will escape the condom and might cause pregnancy?
Depends how much semen you ejaculate - too much & it may leak out & cause more than a bit of trouble for both of you.
The reasonable thing to do would be putting a new one on but hey, in the heat of the moment sometimes you just don't care.
Bad idea, Chaojon. Always get a new one. The risk of pregnancy or infection goes up, because as you said, the semen can leak out and get where you don't want it.