If i am pregnant?

Patient: Hi..im 32 had my first day of period sept.23 just finish pill and i did not continue after having period i had my unprotected sex oct. 2 to 4 is that possible i get pregnant? i had a feeling of heartburn and want to sleep alots i had a test a week ago but its negative i think its early to know find out it can turn out positive if i mis my period? hope you can answer me soon..thanks