hello first of all don t panic delay in periods besides pregnancy can be due to other causes like stress, thyroid disease, hyperprolactinemia, polycystic ovarian disease but if a sexually active woman with previous normal regular periods has delayed periods , pregnancy should be ruled out in ur case no history of condoms or any other birth control method just wiping & squeezing of male genitalia before penetration does not exclude the risk of pregnancy also u r experiencing delayed periods by 6 days ( i presume had previous normal regular periods ) u should go for home urine pregnancy test with first morning urine sample if Upt negative u can repeat it after 4 to 5 days alternatively u can go for blood test ( bhcg ) even if pregnancy diagnosed u can go for medical termination of pregnancy till 9 weeks I would advise you to ensure condom use in future hope this would allay ur worries