Hey i had sex last fri and sat many times and he cum in me everytime (ttc) , my period due im not sure of it but i'm expecting it in the next few days , i have sore heavy breasts thats my only symptom , could i be pregnant? any woman got pregnant 1 week before her period ?

if i miss my period should i take a pregnancy test or should i wait at least 3 weeks ? can the hpt detect pregnancy hormon as soon as you miss your period ? even if it was only been 1 week since sex