That is generally long enough, yes.And if your condom was worn for ALL genital contact, from start to finish, and did not rip, tear or slip off, you didn't have a pregnancy risk at all.
If your periods are not normally irregular, I'd visit your GYN if in the next month, it doesn't right itself, because yes, late or absent periods can be caused by many things, not just pregnancy.
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Heather Corinna
Editor and Founder, Scarleteen
My epitaph should read: "She worked herself into this ground."
-- Kay Bailey Hutchinson