cramping 8 days before period?

I have never experienced this before,only usually a couple days before. I had unprotected sex with my husband just over a week ago but he didn't cum inside me. What really is the likelihood I'm pregnant??: I don't even think I would have any signs this early and probably too early to take a test!FYI -I'm 27 and not trying to conceive just had a bit of a wild night with hubby! Thanks ladies,just wondering if any if you conceived like this or if I'm working over nothing?