He lost the condom?

One of my husbands friends came over and started telling us he hooked up with this girl last night but a unexpected problem occurred.

We asked what happened and he said while they were having sex I lost the condom...

we said what do you mean you lost the condom. He said he lost the condom inside her while they were having sex. It slide off and must of got pushed up in her.

So of course I asked what did you guys do then. And he said he acted like he was done having sex and left..

So I’m starting to get mad at this point and said “you didn’t even fucking tell her”

He admitted he didn’t tell her he lost a condom inside her.

So I told him he should call her and tell her now but he said it would be to weird to call and say something the next day.

I think that’s bullshit to not say anything. Now I’m wondering what could happen with her having that in her and not knowing, will it come out on its own?