my period just stopped after raw sex?

so i got my period this past monday and it was extremely heavy. i had sex on monday and tuesday with a condom during my heavy period. i then had sex on wednesday with no condom and then after wednesday i legit stopped bleeding but i continue to have period like cramps. my periods are usually never this short but i did quit birth control about 3 months ago. could my period have just stopped because i just got pregnant from the raw sex??