you could have experienced implantation bleeding which almost seems like a period and happens between 5-8 days after conceiving. not all women experience this but i would say take a test or go see your doctor and see if you could do a blood pregnancy test. good luck!
is there any chances of being pregnant though i had my period but i'm worried because we didn 't used condom propaly. we first started using condom but we removed it and pull out i had my period after a week but i'm still worried because i'm having some gramps and filling tired