VERY WORRIED

I am late very late staring my period I thinking that it might be because I recently moved from Virginia to North Carolina and I've been under a lot of stress but I have never been this late before. My period cycle is 5-7 days long I would be on my 5th day of my period if it would have started on the 3rd and my last day would be tomorrow. The last time I had unprotected sex was on the 26th of April which is 7 days before my period was supposed to start. I plan on taking a pregnancy test at the end of next week if my period doesn't start by then.