Do I use plan b?

hello

So Me and my bf are planning on having sex soon when it’s a good time and we’re ready Im just super nervous about possibly ever getting pregnant. We’re planning on using a condom pull out method and avoiding my ovulation day but is it a bad idea to also use plan b after even if there isn’t a scare just for back up reasons. I can’t get birth control and I feel like plan b would be a good option can anyone give me advice??