I am 8 days late for my period. My breasts have been sore for 2 weeks the both the side, front all over (painful to wear a seat belt over it), now it is concentrated in mostly the nipples.The past 2 weeks I have already felt like I was on my period , but no blood. It feels like my period is coming, but it doesn't show. I'm not using any protection. I have been very tired as of late.

Have you read any of the posts at the top of this board? This question gets asked daily. The answer is we can't know. You might be pregnant, you might not.
Your odds of course are probably higher for being pregnant than not, because you are not using protection.

I would say that you may be in luck and be pregnant, most of the signs sound that way.

So why not take a home pregnancy test, do it first thing in the morning with the first urine of the day. Good luck and hope you have the child of your dreamw