Depo + plan b????

So I was on my second shot. 5 days after the 2nd injection we made love but didn't come inside me. He did go for round two tho without peeing first. So I took plan b. And I missed my period for nearly two weeks. The app says for a missed period it should come tomorrow. But I'm so so scared can anyone tell me my chances of being preg 😫😫😫