It looks like Molluscum contagiosum. You should see a professional to be sure
Don’t stress it can be removed easily and prevent spreading.
In this condition i have oral sex with my gf ,it causes any infection?
All warts are caused by a virus. It might not appears before weeks or month.
If it is warts or molluscum your girlfriend can have it in her face. You should avoid skin-to-skin contact and wear a condom until you get a real diagnosis by a doctor.