Am I pregnant

I suppose to get my period on 4 or 5 of July 
​ I had unprotected sex on jun 21 and they all went inside me 
​My last period was on June 7 
​Yesterday midnight I saw a pink spot when I wiped but today morning there was nothing? 
​What does that mean 
​Spotting is it period or pregnancy ?? 
​Please I need your advice