[PICS]Had unprotected sex, now bleeding

Li
Last night I had Sex, the condom broke and I took plan b. This evening I think I'm having "spotting" I've never had this before or is it my actual period? It's light. And my period isn't due until another 4 days(what the app says) and I was wondering since I got this today is there still a chance of pregnancy ? Is this spotting ?