Hormonal IUD removal and Plan B, chances of being pregnant?

Hey! It's my first time posting! I know my question may be really dumb of me but basically...

I removed my hormonal iud (not sure if I was ovulating) January 25 took plan b right after because we had sex 2 days before... and had unprotected sex the next day too but he pulled out. I want to know, what are the chances of pregnancy? Before the IUD we have done the pull out method and I guess we were lucky a lot of times before because it worked before..

Should I take plan b again?!