Okay so I had unprotected sex 3 days before my period was due and then was a day late and then had a light to normal period. 2 weeks later and I m feeling a lot of pregnancy symptoms. Cravings, back pain, abdominal cramps, gas, tired all the time, and a nasty taste in my mouth. Is it possible the egg didn t fertilize in time so I still got my period but won t get the next one ?