I haven't got my period this month, sometimes i'm irregular. i have an orangey colored discharge with a bit blood and a foul smell?

Vaginal infection: I am presuming you don't think you could be pregnant; obviously the first thing to do with a missed period is check a pregnancy test, even if you are irregular. If no pregnancy and this type of discharge, next thing to do is check for infection: bacterial vaginosis or trichomonas are two possibilities. See your doctor for diagnostic tests. Good wishes:)