What Causes Late Periods, Lower Abdomen Cramps And Cloudy Discharge?

Hi, I've been having cramps off and on in da middle of my lower abdomen 4 da past 3 days n my period is about 5days late.n just 5days ago i had used a home pregnancy test cos i happen 2 have a clear or cloudy stretchy discharge abou da time i expected my period but the test was -ve. so i thot mayb it was a mense cramp. m rather getting dry down there for 2days now.any chance i might have conceived?oh,n i've been havin this urge 2 puke off n on.please say something 2 make me feel ok.