Advice please!

So I had unprotected sex (he pulled out) (I know that’s not reliable) with my boyfriend 2 days before my period was supposed to start. I missed my period and tested 3 days after I missed it and it was for sure negative. I’m now 6 days late. When should I test again as I had sex so close to my period? I’ve never ever been regular but still just want to make sure. I have no symptoms or anything apart from the missing period.