My period date was 21may and was due. i had a protected sex first time on 30 may..today is 8 june and still my periods are due..am i pregnant?plzz rly

Its possible: Its possible, but mostly because condoms are nearly as effective over time as you might think. With typical use that are only about 80% effective. At 17, i would recommend that you get on a birth control pill and use condoms as well. However, if your periods are regular the may 30 date is a little early in your cycle for conception. Check a pregnancy test just to be sure and see your doctor.