I Ended My Period Last Saturday And Had Unprotected Sex

I ended my period last saturday and had unprotected sex the following monday. Its been a week now and my stomach is feeling sore and bloated and i was thinking if it was pregnancy from my unprotected sex from before, about a month ago but that wont make sense because i had my period a week ago, so can this mean early symptoms of pregnancy? Ive been fatigue and been having cravings intensely these days as well, and i know its too early for pregnancy but can these be early signs?