possible to get pregnant 2 weeks before the period?

Hi,
Welcome to ehealthforum,
If your menstrual cycles are regular, then your fertile days/ovulation time would start after few days of finishing with periods (for a regular menstrual cycle of 28-30 days, the usual fertile days would lie between day 8-18 taking day 1 as first day of bleeding). If you have been sexually active without protection during this time, chances of pregnancy are possible. Wait and watch for your next periods. If pregnancy is suspected, look out for development of any other new symptoms suggestive of pregnancy. If periods do not start within 10 days of expected period dates, or if you get abnormal periods, or if you suspect chances of pregnancy, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
Take care.