hey everyone i need some answers 🤦🏽‍♀️

Hey everyone i need some help im very paranoid and stressing.. I had sex last Monday and ive been experiencing things since that week i had sex..even the week of..My stomach growls alot even when im not hungry dont find myself hungry most of the time and ive been constipated and bloated...Idk but i do feel cramps in lower stomach...Im supposed to be starting my period any day know help???