can u test positive 10 days after having unprotected sex?

Stacey
So my boss tells me to wait 10 days after the last day of unprotected sex to use a hcg test to determine if im pregnant or not. 
Im not sure if its due to the raw cookie dough i ate the other day and the lil bit i had yesterday, or if its due to being actually pregant. I had a beta done a week agonto be exact cuz i got a pos on hcg test but that was a false positive. 
Also i could just be sick. Cuz on tuesday literally out of the blue i get a sore throat and the next day BAM i have a sinus cold. 
So what do u think? Is it worth testing  or not?