Dont know if im pregnant or no

January 15 i have a sexual intercourse, but its my 3rd day menstrual cycyle. And after the next day my menstraution stopped. Then january 27 i have a sexual intercourse. I dont know if nalagyan ako or no kasi sa labas naman niya nilabas. Its my first time makipag sexual intercourse and my menstruation is very regular. Lately i have food cravings like 4 days na akong kumakain lagi ng sinigang na hipon and lagi ako nahihilo and feeling ko nasusuka ako minsan sumusuka na ako talaga. Possible po bang buntis ako sa lagay ko? Salamat po sa sasagot