Should I take emergency contraception?

So my 'bf' and I dont use condoms but I'm on the pill plus he pulls out but when we were drunk he did it very slowly and I think he might've came in me a bit because there wasn't like... a lot that went on me. Anyway I've been on my new pill after my period break for like 8 days and I'm like stressed arghh I'm like so overly worried about this stuff, the emergency contraception is free in the pharmacy near me but still idk if I'm gonna be okay if I don't take it my friends say its fine but idk