Last period was the 2 of december it was a normal period last night had sex and i spot it just a little bit and today i been dizzy almost all day why?

Pregnant possible: Sounds like you are almost a month late, so check a pregnancy test. Spotting after sex in pregnancy is common. Otherwise is could be some spotting from your missed cycle.

Pregnant?: December 2 was awhile ago. Now you have missed a period and are having symptoms of pregnancy. If you are bleeding in early pregnancy, its a good idea to see your Ob. Do a home pregnancy test if you want to know for sure if you are pregnant. Best wishes!