why would you have sex with a woman who is pregnant with another mans child?
I would say that it is safe only if you wear a condom if you guys are in a committed relationship you should go get tested for STDs so that the baby doesn't get anything from the both of you. You should be wearing a condom anyway bc of STDs and she doesn't kow who you are scr*** and you don't know who she is scr***. If she is pregnant and no longer with the baby's father and you are trying to step up to the plate remember its a great responsibility and that the mother and child's health are most important not that it feels different. If you are just getting your rocks off stay protected.