Hi it's been six days since i had sex. the lower part of my stomach is very sore almost like bad cramp. i have been dizzy could i be pregnant?

Pelvic pain: There are many possible causes for this type of pain. It could be that you are feeling menstrual cramps if you are near your period. It could be infection in the female organs especially if you had unprotected sex with a new partner. Pregnancy is a possibility and you should test. Other causes could be bladder related such as urinary tract infection or even a bowel issue. See your Doctor

Pregnant?: Possible. Since you have that pain and think you might be pregnant, go ahead and do a pregnancy test. If you are pregnant and still have the pain, go to ER or dr right away to make sure you don't have an ectopic pregnancy.

More likely: you have an infection with these symptoms, so see your doctor. Too early for pregnancy symptoms.

Pregnant?: Not enough information, but you are probably not pregnant. The soreness can be a result of pelvic infection, which has begun with your sexual contact...it may not be an "STD" but you should see your health care professional now. to make certain if it is an infection, that you receive treatment.