Possibly pregnant

I had unprotected sex today and my boyfriend isn’t really sure if he came in me because he said he felt like he did, but once he pulled out, he came. It’s not a problem if I am, we both already went over this before. But I’m suppose to start my period in about 4 days. If I am pregnant, will I still get my period since it’s so close? (This was very hard to find the right words, hopefully it’s not confusing. If it is, feel free to let me know and ask any questions.)