Hi, Earlier This Month I Had Unprotected Sex. Shortly After

Hi, earlier this month i had unprotected sex. Shortly after i had what looked like a light period followed by spotting. For the past 2 weeks ive been having unprotected sex with my bf. Last night we had sex. Wasnt rough or damaging. I webt to the bathroom and it was very faint pink discharge when i wiped. So i told him and today i went pee and wiped it was very faint pink again but after 3 wipes it was gone. Could i be pregnant?