My LMP was July 25 I ovulated August 4-9 had sex on the 12th Im now 7 days late for my period and cramping could i be pregnant?

Hello Tracey,
Yes you could be pregnant. Since you are already late for you period, you should take a HPT or go to a clinic and have them give you a pregnancy test.
Hope that helps,
~*~Maui~*~