Hi, I have a sexual health question Last night I

Patient: Hi, I have a sexual health question. Last night I had sex and my boyfriend lost his condom. It stayed inside me for about 16 hours. When I took it out I had some light bleeding. My last period started 13 or 14 days ago so I don’t think it is that. I’m worried it might be implantation bleeding and am wondering if it is too late to take an emergency contraceptive.