Could i be pregnant?

Patient: About a month ago i had unprotected sex, and i am not on birth control. he pulled out. about a week after having sex my period was suppose to start and it did, but it was very very light. usually my periods are very heavy last about 7 days. but this time it lasted about 5 days and was very light and blood only came out sometimes. lately ive had a increase in appetite and i have tons of food cravings and i cant stop eating. also ive been having night sweats alot and have been feeling very hot 24/7. also a few days ago i felt very nauseous in the morning. ive only been nauseous that one time.