Should I Test Or Not??

Ok i am a 24 yr old female and i had unprotected sex and then i got my period nine days early for the first time in nine years since i had my period and it lasted three and a half days when its normally five. but afterwards i am still feeling really tired, nausea, and going to the toilet a lot and i seem to be gaining weight and having cravings like for example i hate pumpkin and i be wanting it. lol. i was wondering do you guys believe i should test or not. it be a real help to get answers from women who have experience this and later found out they were pregnant. thank you.