I was due to get my period nov 2nd and I had bad period cramps throughout that whole days but no period now I'm having light cramping on and off and still no period. Could I be pregnant ? I did have sex during my ovulation time.

hmm... if you had sex there is ALWAYS a possibility of pregnancy.
buy a pregnancy test, and if you would like I would wait 3 days before freaking out. Are you regular or irregular? But either way take the test and see what it says, if you have not gotten your period and you took the test but it came out negative I would recommend seeing your Dr. but if you have light spotting instead of a "normal" flow... there is a possibility of pregnancy
good luck=]