I've missed my period, its been 6 days and I don't know what to do. Should I wait it out? Another month? Or should I take a test. Please help!

How old are you? if you are sexually active ,and you are not practicing safe sex, and you missed your period, yes try home pregnancy test first,if negative, but still no period or you start having other symptoms that suggest pregnancy, then see a physician. I do not know how old you are, but please practice safe sex.
Missed menses. if you have had sex, a missed period could signal pregnancy. Best to do a pregnancy test. If negative and menses does does start, you can repeat the test in a week.