PLAN B//PLEASE HELP

Ok so me and my boyfriend had sex last night and the condom broke so we kept going without one and he pulled out really early.. im supposed to start my period in like 10 days and I’m deciding whether I should take a plan b or not. I don’t feel any morning sickness or anything like that so what should I do please help. I know it wasn’t a smart decison to do it unprotected so please don’t get on my ass for it I will use a condom next time and be smarter I’m just in a bad situation and I don’t know what to do