No bc, what should I do?

So I been on the pill for 2yrs, this month I didn’t get it because I didn’t have the money at the time I needed it and me and my guy friend were off and on and not really having sex. So we ended up having sex today, no condom but he pulled out and I’m also fertile today & supposed to ovulate 2mrw, should I still take a plan b just to make sure I’m good?? He pulled out but then after he came went back inside me, would plan b work even tho I’m so close to ovulation??