Pregnancy scare

I’m on the pill and this month I forgot to take it on time two days. And I’ve had unprotected sex multiple times with my partner. The last time I took a plan b because he was scared after I told him I missed my pill. This week I was supposed to start my period. But it’s already Friday and I’m four days late. I don’t want to freak myself out or him but should I take a pregnancy test just to be sure?