Trying to have a baby!!

Hy girls! Me and my husband we're trying to get pregnant :)) Please help me by responding me at one question: we had unsafe sex 6 days before my period come. It's there a possibility to be pregnant? My period normally had to start on 20 may, and it's 24 and hasn't start. Well? Am I pregnant? I'm a little afraid of taking a pregnancy test, because I don't wanna be dissapointed if it's negative :(