Can women have with condom while having a STD?

my friend asked me a question that i don't even know the answer to. she wants to know if she can have with her partner using a condom while having a STD will it affect her? because she took her medication already 1 week ago but she wants to know if she can steel have with condom?? she dnt know i posted this ques tonn but then Again no one knows her...